def add(a, b):
    print("ADDING {} + {}".format(a,b))
    return a + b

def subtract(a, b):
    print("SUBTRACTING {} - {}".format(a,b))
    return a - b

def multiply(a, b):
    print("MULTIPLYING {} * {}".format(a,b))
    return a * b

def divide(a,b):
    print("DIVIDING {} / {}".format(a,b))
    return a / b

print("Lets do some math")

age = add(30,5)
height = subtract(78,4)
weight = multiply(90,2)
iq = divide(100,2)

print("Age: {}, Height: {}, Weight: {}, IQ: {}".format(age, height, weight, iq))

print("Here is a puzzle")

what = add(age,subtract(height,multiply(weight,divide(iq,2))))

print("That becomes: ", what, "Can you do it by hand")
