def multiply(a,b):
	return a * b
def subtract(a,b):
	return a - b
def add(a,b):
	return a + b
def divide(a,b):
	return a / b
print "I'm going use the calculator functions to multiply 5 and 6"
x = multiply(5,6)
print x	
print "I'm going to use the calculator functions to divide 30 and 5"
y = multiply(30,5)
print y
print "I'm going to use the calculator functions to add 12 and 15"
z = add(12,15)
print z
print "I'm going to use the calculator functions to subtract 12 and 15"
w = subtract(12,15)
print w			