Tamar Co. manufactures a single product in one department. All direct materials are added at the beginning of the manufacturing process. Conversion costs are added evenly throughout the process. During May, the company completed and transferred 22,200 units of product to finished goods inventory. Its 3,000 units of beginning work in process consisted of $19,800 of direct materials and $221,940 of conversion costs. It has 2,400 units (100% complete with respect to direct materials and 80% complete with respect to conversion) in process at month-end. During the month, $496,800 of direct material costs and $2,165,940 of conversion costs were charged to production.