# -*- coding: utf-8 -*-
def add(a,b):
	print "ADDING %d + %d" %(a,b)
	return a + b
def subtract(a,b):
	print "SUBTRACTING %d - %d" %(a,b)
	return a - b
def multiply(a,b):
	print "MULTIPLYING %d * %d" %(a,b)
	return a * b
def divide(a,b):
	print "DIVIDING %d/%d" %(a,b)
	return a / b

print "Let's do some math with just functions!"

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

print "Age:%d, Height:%d, Weight:%d, IQ:%d" %(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?"