diff --git a/src/calc.rs b/src/calc.rs
index fd07534..0a8f0be 100644
--- a/src/calc.rs
+++ b/src/calc.rs
@@ -186,6 +186,8 @@ impl Calculator {
             CalculatorState::WaitingForSetting => self.setting_input(c),
         }
     }
+    // This function is very long, but it is just a match, so it should be fine
+    #[allow(clippy::too_many_lines)]
     fn normal_input(&mut self, c: char) -> CalculatorResult<()> {
         match c {
             c @ '0'..='9' | c @ '.' | c @ 'e' => match c {
@@ -194,11 +196,7 @@ impl Calculator {
                     Ok(())
                 }
                 'e' => {
-                    if self.l.is_empty() {
-                        let f = self.pop().or(Err(CalculatorError::NotEnoughStackEntries))?;
-
-                        self.l = f.to_string();
-                    }
+                    self.edit()?;
 
                     if !self.l.contains('e') {
                         self.l.push('e');
@@ -437,10 +435,15 @@ impl Calculator {
             return Ok(());
         }
 
-        self.l = self
-            .pop()
-            .or(Err(CalculatorError::NotEnoughStackEntries))?
-            .to_string();
+        // Temporary check to see if we can get an editable string
+        let str = self.peek(0)?.to_editable_string()?;
+
+        // If we got here, then there was no error. Pop
+        self.pop()?;
+
+        // Set l after popping
+        self.l = str;
+
         Ok(())
     }
     /// Get the value of l
diff --git a/src/calc/entries.rs b/src/calc/entries.rs
index 785579b..6c2d4f5 100644
--- a/src/calc/entries.rs
+++ b/src/calc/entries.rs
@@ -1,5 +1,5 @@
-// use super::operations::CalculatorStateChange;
-// TODO: This file kina blows. Tons of repetition. Do not know how to fix yet though
+// TODO: Clippy is recommending pass by value instead of by ref, but I plan to add imaginary numbers, which will change this
+#![allow(clippy::trivially_copy_pass_by_ref)]
 use super::errors::{CalculatorError, CalculatorResult};
 use super::types::CalculatorAngleMode;
 use crate::calc::CalculatorDisplayMode;
@@ -12,15 +12,6 @@ pub struct Number {
     pub value: f64,
 }
 
-impl Number {
-    fn binary_op(arg: &Entry, op: impl Fn(&Number) -> Number) -> CalculatorResult<Entry> {
-        match arg {
-            Entry::Number(number) => Ok(Entry::Number(op(number))),
-            Entry::Vector(vector) => Ok(vector.map_into(op)),
-        }
-    }
-}
-
 impl PartialEq for Number {
     fn eq(&self, other: &Self) -> bool {
         if self.value.is_nan() && other.value.is_nan()
@@ -45,41 +36,6 @@ pub struct Vector {
     pub values: Vec<Number>,
 }
 
-impl Vector {
-    fn binary_op(
-        &self,
-        arg: &Entry,
-        op: impl Fn((&Number, &Number)) -> Number,
-    ) -> CalculatorResult<Entry> {
-        match arg {
-            // Entry::Number(number) => Ok(Entry::Number(op(number))),
-            Entry::Number(number) => Ok(self.map_into(|t| op((t, number)))),
-            Entry::Vector(vector) => {
-                if self.values.len() != vector.values.len() {
-                    return Err(CalculatorError::ArithmeticError);
-                }
-
-                Ok(Entry::Vector(Vector {
-                    values: self
-                        .values
-                        .iter()
-                        .zip(vector.values.iter())
-                        .map(op)
-                        .collect(),
-                    ..*self
-                }))
-            }
-        }
-    }
-
-    pub fn map_into(&self, op: impl Fn(&Number) -> Number) -> Entry {
-        Entry::Vector(Vector {
-            values: (self.values.iter().map(op).collect()),
-            ..*self
-        })
-    }
-}
-
 #[derive(Clone, PartialEq, Debug, Serialize, Deserialize)]
 #[serde(tag = "type")]
 pub enum Entry {
@@ -88,7 +44,28 @@ pub enum Entry {
     // Matrix(Vec<Vec<Number>>),
 }
 
+// macro_rules! op_child_call {
+//         ($a:ident, $op:ident) => {
+//                 match $a {
+//                         Self::Number(number) => number.$op(),
+//                         Self::Vector(vector) => vector.$op(),
+//                 }
+//         };
+//         ($a:ident, $op:ident, $arg:expr) => {
+//                 match $a {
+//                         Self::Number(number) => number.$op($arg),
+//                         Self::Vector(vector) => vector.$op($arg),
+//                 }
+//         };
+// }
+
 impl CalculatorEntry for Entry {
+    fn to_editable_string(&self) -> CalculatorResult<String> {
+        match self {
+            Self::Number(number) => number.to_editable_string(),
+            Self::Vector(vector) => vector.to_editable_string(),
+        }
+    }
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
         match self {
             Self::Number(number) => number.format_entry(display_mode),
@@ -101,36 +78,6 @@ impl CalculatorEntry for Entry {
             Self::Vector(vector) => vector.is_valid(),
         }
     }
-    fn add(&self, arg: &Self) -> CalculatorResult<Self> {
-        match self {
-            Self::Number(number) => number.add(arg),
-            Self::Vector(vector) => vector.add(arg),
-        }
-    }
-    fn sub(&self, arg: &Self) -> CalculatorResult<Self> {
-        match self {
-            Self::Number(number) => number.sub(arg),
-            Self::Vector(vector) => vector.sub(arg),
-        }
-    }
-    fn mul(&self, arg: &Self) -> CalculatorResult<Self> {
-        match self {
-            Self::Number(number) => number.mul(arg),
-            Self::Vector(vector) => vector.mul(arg),
-        }
-    }
-    fn div(&self, arg: &Self) -> CalculatorResult<Self> {
-        match self {
-            Self::Number(number) => number.div(arg),
-            Self::Vector(vector) => vector.div(arg),
-        }
-    }
-    fn int_divide(&self, arg: &Self) -> CalculatorResult<Self> {
-        match self {
-            Self::Number(number) => number.int_divide(arg),
-            Self::Vector(vector) => vector.int_divide(arg),
-        }
-    }
     fn negate(&self) -> CalculatorResult<Self> {
         match self {
             Self::Number(number) => number.negate(),
@@ -149,12 +96,6 @@ impl CalculatorEntry for Entry {
             Self::Vector(vector) => vector.inverse(),
         }
     }
-    fn modulo(&self, arg: &Self) -> CalculatorResult<Self> {
-        match self {
-            Self::Number(number) => number.modulo(arg),
-            Self::Vector(vector) => vector.modulo(arg),
-        }
-    }
     fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Self> {
         match self {
             Self::Number(number) => number.sin(angle_mode),
@@ -209,15 +150,141 @@ impl CalculatorEntry for Entry {
             Self::Vector(vector) => vector.ln(),
         }
     }
+
+    fn add(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.add_num(number),
+            Self::Vector(vector) => self.add_vec(vector),
+        }
+    }
+    fn sub(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.sub_num(number),
+            Self::Vector(vector) => self.sub_vec(vector),
+        }
+    }
+    fn mul(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.mul_num(number),
+            Self::Vector(vector) => self.mul_vec(vector),
+        }
+    }
+    fn div(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.div_num(number),
+            Self::Vector(vector) => self.div_vec(vector),
+        }
+    }
+    fn int_divide(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.int_divide_num(number),
+            Self::Vector(vector) => self.int_divide_vec(vector),
+        }
+    }
+    fn modulo(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.modulo_num(number),
+            Self::Vector(vector) => self.modulo_vec(vector),
+        }
+    }
     fn pow(&self, arg: &Self) -> CalculatorResult<Self> {
+        match arg {
+            Self::Number(number) => self.pow_num(number),
+            Self::Vector(vector) => self.pow_vec(vector),
+        }
+    }
+
+    fn add_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
         match self {
-            Self::Number(number) => number.pow(arg),
-            Self::Vector(vector) => vector.pow(arg),
+            Self::Number(number) => number.add_vec(arg),
+            Self::Vector(vector) => vector.add_vec(arg),
+        }
+    }
+    fn sub_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.sub_vec(arg),
+            Self::Vector(vector) => vector.sub_vec(arg),
+        }
+    }
+    fn mul_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.mul_vec(arg),
+            Self::Vector(vector) => vector.mul_vec(arg),
+        }
+    }
+    fn div_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.div_vec(arg),
+            Self::Vector(vector) => vector.div_vec(arg),
+        }
+    }
+    fn int_divide_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.int_divide_vec(arg),
+            Self::Vector(vector) => vector.int_divide_vec(arg),
+        }
+    }
+    fn modulo_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.modulo_vec(arg),
+            Self::Vector(vector) => vector.modulo_vec(arg),
+        }
+    }
+    fn pow_vec(&self, arg: &Vector) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.pow_vec(arg),
+            Self::Vector(vector) => vector.pow_vec(arg),
+        }
+    }
+
+    fn add_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.add_num(arg),
+            Self::Vector(vector) => vector.add_num(arg),
+        }
+    }
+    fn sub_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.sub_num(arg),
+            Self::Vector(vector) => vector.sub_num(arg),
+        }
+    }
+    fn mul_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.mul_num(arg),
+            Self::Vector(vector) => vector.mul_num(arg),
+        }
+    }
+    fn div_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.div_num(arg),
+            Self::Vector(vector) => vector.div_num(arg),
+        }
+    }
+    fn int_divide_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.int_divide_num(arg),
+            Self::Vector(vector) => vector.int_divide_num(arg),
+        }
+    }
+    fn modulo_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.modulo_num(arg),
+            Self::Vector(vector) => vector.modulo_num(arg),
+        }
+    }
+    fn pow_num(&self, arg: &Number) -> CalculatorResult<Self> {
+        match self {
+            Self::Number(number) => number.pow_num(arg),
+            Self::Vector(vector) => vector.pow_num(arg),
         }
     }
 }
 
 impl CalculatorEntry for Number {
+    fn to_editable_string(&self) -> CalculatorResult<String> {
+        Ok(format!("{}", self.value))
+    }
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
         match display_mode {
             CalculatorDisplayMode::Default => format!("{}", self.value),
@@ -232,31 +299,6 @@ impl CalculatorEntry for Number {
     fn is_valid(&self) -> bool {
         !self.value.is_nan() && !self.value.is_infinite()
     }
-    fn add(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value + self.value,
-        })
-    }
-    fn sub(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value - self.value,
-        })
-    }
-    fn mul(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value * self.value,
-        })
-    }
-    fn div(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value / self.value,
-        })
-    }
-    fn int_divide(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value.div_euclid(self.value),
-        })
-    }
     fn negate(&self) -> CalculatorResult<Entry> {
         Ok(Entry::Number(Self { value: -self.value }))
     }
@@ -270,11 +312,6 @@ impl CalculatorEntry for Number {
             value: self.value.recip(),
         }))
     }
-    fn modulo(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value % self.value,
-        })
-    }
     fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
         Ok(Entry::Number(Self {
             value: match angle_mode {
@@ -344,21 +381,142 @@ impl CalculatorEntry for Number {
             value: self.value.ln(),
         }))
     }
+
+    fn add(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.add_vec(vector),
+            Entry::Number(number) => self.add_num(number),
+        }
+    }
+    fn sub(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.sub_vec(vector),
+            Entry::Number(number) => self.sub_num(number),
+        }
+    }
+    fn mul(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.mul_vec(vector),
+            Entry::Number(number) => self.mul_num(number),
+        }
+    }
+    fn div(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.div_vec(vector),
+            Entry::Number(number) => self.div_num(number),
+        }
+    }
+    fn int_divide(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.int_divide_vec(vector),
+            Entry::Number(number) => self.int_divide_num(number),
+        }
+    }
+    fn modulo(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.modulo_vec(vector),
+            Entry::Number(number) => self.modulo_num(number),
+        }
+    }
     fn pow(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        Number::binary_op(&arg, |b| Self {
-            value: b.value.powf(self.value),
-        })
+        match arg {
+            Entry::Vector(vector) => self.pow_vec(vector),
+            Entry::Number(number) => self.pow_num(number),
+        }
+    }
+
+    fn add_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::add_num)
+    }
+    fn sub_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::sub_num)
+    }
+    fn mul_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::mul_num)
+    }
+    fn div_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::div_num)
+    }
+    fn int_divide_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::int_divide_num)
+    }
+    fn modulo_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::modulo_num)
+    }
+    fn pow_vec(&self, arg: &Vector) -> CalculatorResult<Entry> {
+        self.iterated_binary(arg, Self::pow_num)
+    }
+
+    fn add_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value + self.value,
+        }))
+    }
+    fn sub_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value - self.value,
+        }))
+    }
+    fn mul_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value * self.value,
+        }))
+    }
+    fn div_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value / self.value,
+        }))
+    }
+    fn int_divide_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value.div_euclid(self.value),
+        }))
+    }
+    fn modulo_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value % self.value,
+        }))
+    }
+    fn pow_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        Ok(Entry::Number(Self {
+            value: arg.value.powf(self.value),
+        }))
+    }
+}
+
+impl Number {
+    fn iterated_binary(
+        self,
+        vector: &Vector,
+        op: impl Fn(&Self, &Self) -> CalculatorResult<Entry>,
+    ) -> CalculatorResult<Entry> {
+        Ok(Entry::Vector(Vector {
+            values: vector
+                .values
+                .iter()
+                .map(|n| op(&self, n))
+                .map(|e| match e {
+                    // Only numbers are valid in a vector
+                    Ok(Entry::Number(number)) => Ok(number),
+                    _ => Err(CalculatorError::ArithmeticError),
+                })
+                .collect::<CalculatorResult<Vec<Self>>>()?,
+            direction: vector.direction,
+        }))
     }
 }
 
 impl CalculatorEntry for Vector {
     // Misc
+    fn to_editable_string(&self) -> CalculatorResult<String> {
+        // TODO: Eventualy we can parse and edit a vector as a string
+        Err(CalculatorError::TypeMismatch)
+    }
     fn is_valid(&self) -> bool {
-        !self
-            .values
+        self.values
             .iter()
             .find(|number| !number.is_valid())
-            .is_some()
+            .is_none()
     }
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String {
         format!(
@@ -371,80 +529,237 @@ impl CalculatorEntry for Vector {
         )
     }
     // Mathematical operations
-    fn add(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value + a.value,
-        })
-    }
-    fn sub(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value - a.value,
-        })
-    }
-    fn mul(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value * a.value,
-        })
-    }
-    fn div(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value / a.value,
-        })
-    }
-    fn int_divide(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value.div_euclid(a.value),
-        })
-    }
     fn negate(&self) -> CalculatorResult<Entry> {
-        Ok(self.map_into(|n| Number { value: -n.value }))
+        self.iterated_unary(Number::negate)
     }
     fn abs(&self) -> CalculatorResult<Entry> {
-        Ok(self.map_into(|n| Number {
-            value: n.value.abs(),
-        }))
+        self.iterated_unary(Number::abs)
     }
     fn inverse(&self) -> CalculatorResult<Entry> {
-        Ok(Entry::Vector(Vector {
-            direction: !self.direction,
-            ..*self
-        }))
+        self.iterated_unary(Number::inverse)
+    }
+    fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
+        self.iterated_unary(|n| n.sin(angle_mode))
+    }
+    fn cos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
+        self.iterated_unary(|n| n.cos(angle_mode))
+    }
+    fn tan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
+        self.iterated_unary(|n| n.tan(angle_mode))
+    }
+    fn asin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
+        self.iterated_unary(|n| n.asin(angle_mode))
+    }
+    fn acos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
+        self.iterated_unary(|n| n.acos(angle_mode))
+    }
+    fn atan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {
+        self.iterated_unary(|n| n.atan(angle_mode))
+    }
+    fn sqrt(&self) -> CalculatorResult<Entry> {
+        self.iterated_unary(Number::sqrt)
+    }
+    fn log(&self) -> CalculatorResult<Entry> {
+        self.iterated_unary(Number::log)
+    }
+    fn ln(&self) -> CalculatorResult<Entry> {
+        self.iterated_unary(Number::ln)
+    }
+
+    fn add(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.add_vec(vector),
+            Entry::Number(number) => self.add_num(number),
+        }
+    }
+    fn sub(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.sub_vec(vector),
+            Entry::Number(number) => self.sub_num(number),
+        }
+    }
+    fn mul(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.mul_vec(vector),
+            Entry::Number(number) => self.mul_num(number),
+        }
+    }
+    fn div(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.div_vec(vector),
+            Entry::Number(number) => self.div_num(number),
+        }
+    }
+    fn int_divide(&self, arg: &Entry) -> CalculatorResult<Entry> {
+        match arg {
+            Entry::Vector(vector) => self.int_divide_vec(vector),
+            Entry::Number(number) => self.int_divide_num(number),
+        }
     }
     fn modulo(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value % a.value,
-        })
+        match arg {
+            Entry::Vector(vector) => self.modulo_vec(vector),
+            Entry::Number(number) => self.modulo_num(number),
+        }
     }
-    fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
-    fn cos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
-    fn tan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
-    fn asin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
-    fn acos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
-    fn atan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry> {}
-    fn sqrt(&self) -> CalculatorResult<Entry> {}
-    fn log(&self) -> CalculatorResult<Entry> {}
-    fn ln(&self) -> CalculatorResult<Entry> {}
     fn pow(&self, arg: &Entry) -> CalculatorResult<Entry> {
-        self.binary_op(&arg, |(a, b)| Number {
-            value: b.value.powf(a.value),
-        })
+        match arg {
+            Entry::Vector(vector) => self.pow_vec(vector),
+            Entry::Number(number) => self.pow_num(number),
+        }
+    }
+
+    fn add_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::add_num)
+    }
+    fn sub_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::sub_num)
+    }
+    fn mul_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::mul_num)
+    }
+    fn div_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::div_num)
+    }
+    fn int_divide_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::int_divide_num)
+    }
+    fn modulo_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::modulo_num)
+    }
+    fn pow_vec(&self, arg: &Self) -> CalculatorResult<Entry> {
+        self.iterated_binary_vec(arg, Number::pow_num)
+    }
+
+    fn add_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::add_num)
+    }
+    fn sub_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::sub_num)
+    }
+    fn mul_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::mul_num)
+    }
+    fn div_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::div_num)
+    }
+    fn int_divide_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::int_divide_num)
+    }
+    fn modulo_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::modulo_num)
+    }
+    fn pow_num(&self, arg: &Number) -> CalculatorResult<Entry> {
+        self.iterated_binary_num(arg, Number::pow_num)
     }
 }
 
-pub trait CalculatorEntry {
+impl Vector {
+    fn iterated_unary(
+        &self,
+        op: impl Fn(&Number) -> CalculatorResult<Entry>,
+    ) -> CalculatorResult<Entry> {
+        Ok(Entry::Vector(Self {
+            values: self
+                .values
+                .iter()
+                .map(|n| op(n))
+                .map(|e| match e {
+                    // Only numbers are valid in a vector
+                    Ok(Entry::Number(number)) => Ok(number),
+                    _ => Err(CalculatorError::ArithmeticError),
+                })
+                .collect::<CalculatorResult<Vec<Number>>>()?,
+            direction: true,
+        }))
+    }
+
+    fn iterated_binary_vec(
+        &self,
+        v2: &Self,
+        op: impl Fn(&Number, &Number) -> CalculatorResult<Entry>,
+    ) -> CalculatorResult<Entry> {
+        if self.values.len() != v2.values.len() {
+            return Err(CalculatorError::ArithmeticError);
+        }
+        if self.direction != v2.direction {
+            // TODO: Return a different error
+            return Err(CalculatorError::ArithmeticError);
+        }
+        Ok(Entry::Vector(Self {
+            values: self
+                .values
+                .iter()
+                .zip(v2.values.iter())
+                .map(|(n1, n2)| op(n1, n2))
+                .map(|e| match e {
+                    // Only numbers are valid in a vector
+                    Ok(Entry::Number(number)) => Ok(number),
+                    _ => Err(CalculatorError::ArithmeticError),
+                })
+                .collect::<CalculatorResult<Vec<Number>>>()?,
+            direction: true,
+        }))
+    }
+    fn iterated_binary_num(
+        &self,
+        n2: &Number,
+        op: impl Fn(&Number, &Number) -> CalculatorResult<Entry>,
+    ) -> CalculatorResult<Entry> {
+        Ok(Entry::Vector(Self {
+            values: self
+                .values
+                .iter()
+                .map(|n| op(n, n2))
+                .map(|e| match e {
+                    // Only numbers are valid in a vector
+                    Ok(Entry::Number(number)) => Ok(number),
+                    _ => Err(CalculatorError::ArithmeticError),
+                })
+                .collect::<CalculatorResult<Vec<Number>>>()?,
+            direction: true,
+        }))
+    }
+}
+
+pub trait CalculatorEntry
+where
+    Self: Sized,
+{
     // Misc
     fn is_valid(&self) -> bool;
     fn format_entry(&self, display_mode: &CalculatorDisplayMode) -> String;
+    fn to_editable_string(&self) -> CalculatorResult<String>;
     // Mathematical operations
+    // Binary
     fn add(&self, arg: &Entry) -> CalculatorResult<Entry>;
     fn sub(&self, arg: &Entry) -> CalculatorResult<Entry>;
     fn mul(&self, arg: &Entry) -> CalculatorResult<Entry>;
     fn div(&self, arg: &Entry) -> CalculatorResult<Entry>;
     fn int_divide(&self, arg: &Entry) -> CalculatorResult<Entry>;
+    fn modulo(&self, arg: &Entry) -> CalculatorResult<Entry>;
+    fn pow(&self, arg: &Entry) -> CalculatorResult<Entry>;
+
+    fn add_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+    fn sub_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+    fn mul_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+    fn div_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+    fn int_divide_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+    fn modulo_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+    fn pow_vec(&self, arg: &Vector) -> CalculatorResult<Entry>;
+
+    fn add_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+    fn sub_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+    fn mul_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+    fn div_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+    fn int_divide_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+    fn modulo_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+    fn pow_num(&self, arg: &Number) -> CalculatorResult<Entry>;
+
+    // Unary
     fn negate(&self) -> CalculatorResult<Entry>;
     fn abs(&self) -> CalculatorResult<Entry>;
     fn inverse(&self) -> CalculatorResult<Entry>;
-    fn modulo(&self, arg: &Entry) -> CalculatorResult<Entry>;
     fn sin(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry>;
     fn cos(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry>;
     fn tan(&self, angle_mode: CalculatorAngleMode) -> CalculatorResult<Entry>;
@@ -454,13 +769,13 @@ pub trait CalculatorEntry {
     fn sqrt(&self) -> CalculatorResult<Entry>;
     fn log(&self) -> CalculatorResult<Entry>;
     fn ln(&self) -> CalculatorResult<Entry>;
-    fn pow(&self, arg: &Entry) -> CalculatorResult<Entry>;
 }
 
 impl fmt::Display for Entry {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
-            Self::Number(Number { value }) => write!(f, "{}", value),
+            Self::Number(number) => write!(f, "{}", number),
+            Self::Vector(vector) => write!(f, "{}", vector),
         }
     }
 }
@@ -471,6 +786,20 @@ impl fmt::Display for Number {
     }
 }
 
+impl fmt::Display for Vector {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "[{}]",
+            self.values
+                .iter()
+                .map(|number| format!("{}", number))
+                .collect::<Vec<String>>()
+                .join("; ")
+        )
+    }
+}
+
 // Based on https://stackoverflow.com/a/65266882
 fn scientific(f: f64, precision: usize) -> String {
     let mut ret = format!("{:.precision$E}", f, precision = precision);
diff --git a/src/main.rs b/src/main.rs
index 72372d0..3085d25 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -135,7 +135,13 @@ impl App {
                             .calculator
                             .registers
                             .iter()
-                            .map(|(key, value)| format!("{}: {}", key, value))
+                            .map(|(key, value)| {
+                                format!(
+                                    "{}: {}",
+                                    key,
+                                    value.format_entry(&self.calculator.display_mode)
+                                )
+                            })
                             .fold(String::new(), |acc, s| acc + &s + "\n")
                             .trim_end(),
                     },