Trying to sum two items instead of combining them such as 500 for rent, 50 utilities returns 50050 instead of the desired 550.
from sys import argv
def bills(rent, utilities):
raw_input("How much is your rent?") % (rent)
raw_input("How much are utilities?") % (utilities)
rent = raw_input("How much is your rent? ")
utilities = raw_input("How much are utilities? ")
total = rent + utilities
print total