def area(width, height):
    result = width * height
    return result

result = area(5, 6)
print(result)

result = area(7, 8)
print(result)

result = area(9, 10)
print(result)

result = area(11, 12)
print(result)

def subtract(num1, num2):
    result = num1 - num2
    return result

result = subtract(5, 6)
print(result)

result = subtract(7, 8)
print(result)

def add(num1, num2):
    result = num1 + num2
    return result

result = add(5, 6)
print(result)

result = add(7, 8)
print(result)