Norbert Catering is famous for its roast beef sandwiches. The store’s owner wants a program that he can use to estimate the number of pounds of roast beef a customer should purchase, given the desired number of sandwiches and the amount of meat per sandwich. Typically, one sandwich requires two to three ounces of meat, but some customers prefer four or five ounces per sandwich. Complete an IPO chart for this problem. Desk-check the algorithm using 50 as the number of sandwiches and 4 ounces as the amount of meat per sandwich. Then desk-check it using 224 and 2 ounces.