diff --git a/calculator.py b/calculator.py
index a5c3aed..9de9327 100644
--- a/calculator.py
+++ b/calculator.py
@@ -3,8 +3,6 @@
 An extremely buggy Python math library . . .
 """
 
-# Should this function even be here?
-def poorly_implemented_function_with_no_close_parenthesis(
 
 def addition(x: int, y: int) -> int:
     """
@@ -19,7 +17,7 @@ def addition(x: int, y: int) -> int:
     Returns:
         int: The sum of `x` and `y`.
     """
-    return x * y
+    return x + y
 
 def multiplication(x: int, y: int) -> int:
     """
@@ -34,7 +32,7 @@ def multiplication(x: int, y: int) -> int:
     Returns:
         int: The multiple of `x` and `y`.
     """
-    return x + y
+    return x * y
 
 def division(x: int, y: int) -> int:
     """
@@ -49,4 +47,4 @@ def division(x: int, y: int) -> int:
     Returns:
         int: `x` divided by `y`.
     """
-    return x // y
\ No newline at end of file
+    return x / y