Question: A customer at a fast-food restaurant can order a hamburger with or without mustard, ketchup, pickle, or onion; a fish sandwich with or without lettuce, tomato, or tartar sauce; and a choice of three kinds of soft drinks or two kinds of milk shakes.
Q: How many different orders are possible if a customer can order at most one hamburger, one fish sandwich, and one beverage but can order less?
Need descriptive work (explanation in words and a formula). Please show all your work and give an explanation of steps