Bad Math in python.

add.py

from time import sleep, time

def add(n1, n2):
	start = time()
	sleep(n1)
	sleep(n2)
	return int(time() - start)

multiply.py

def multiply(n1,n2):
	n3 = n1
	for i in range(1,n2):
		n1 += n3
	return n1