def add(first_num, second_num):
    return first_num + second_num

def subtract(first_num, second_num):
    return first_num - second_num

def multiply(first_num, second_num):
    return first_num * second_num

def divide(first_num, second_num):
    return first_num / second_num

print(add(10, 2))
print(subtract(10,2))
print(multiply(10,2))
print(divide(10,2))