please help, The highlighted blue boxes need to be filled in

Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December 15, Monson sells 26 units for $25 each Purchases on December 7 16 units @ $10.00 cost Purchases on December 14 33 units @ $15.00 cost Purchases on December 21 26 units @ $18.00 cost RS 5-11 (Algo) Perpetual: Assigning costs with FIFO LO P1 Required: Determine the costs assigned to the December 31 ending Inventory based on the FIFO method. Date Perpetual FIFO Goods Purchased Cost of Goods Sold of Goods Cost Per Cost Per Cost of Goods of Units Units Unit Purchased Unit Sold Sold 16) at $ 10.00] = $ 160.00 Inventory Balance # of Units Cost Per Inventory Unit Balance December 7 33 $ 15.00 $ 495 00 December 14 Totul December 14 December 15 Totul December 15 26 5 18.00 3468.00 December 21 Totals