mycalculator.py

def addition(a,b):
    return f"{a} + {b} = {a + b}"

def substraction(a,b):
    return f"{a} - {b} = {a - b}"

def multiplication(a,b):
    return f"{a} x {b} = {a * b}"

def division(a,b):
    return f"{a} / {b} = {a / b}"