def my_func(a, b):
    c = 2 * (a + b)
    return c

my_func(10, 20)

def add(a, b):
    c = a + b
    return c

print(add(3, 5))

def minus(a, b):
    c = a - b
    print(c)

minus(10, 2)

def plus4():
    for i in range(1, 11):
        print(i + 4)

plus4()

def cal():
    a = (100 - 84) // 2
    return a

print(cal())