Wheatmore Company manufactures cold cereal products, such as Frosted Flakes. Assume that the inventory in process on March 1 for the Packing Department included 660 pounds of cereal in the packing machine hopper (enough for 440 24-oz. boxes) and 440 empty 24-oz. boxes held in the package carousel of the packing machine. During March, 36,520 boxes of 24-oz. cereal were packaged. Conversion costs are incurred when a box is filled with cereal. On March 31, the packing machine hopper