please include calculations where needed

Required information [The following information applies to the questions displayed below) Hemming Co. reported the following current-year purchases and sales for its only product Units Sold at Retail Units Acquired at Cost 200 units @ $10 = $ 2,000 350 units @ $15 5,250 150 units @ $40 Date Activities Jan. 1 Beginning inventory Jan. 19 Sales Mar. 14 Purchase Mar. 15 Sales July 30 Purchase Oct. 5 Sales Oct. 26 Purchase Totals 300 units @ $40 450 units @ $20 9,000 430 units @ $40 100 units 1,100 units @ $25 2,500 $18,750 880 units Required: Hemming uses a perpetual inventory system. 1. Determine the costs assigned to ending inventory and to cost of goods sold using FIFO. 2. Determine the costs assigned to ending inventory and to cost of goods sold using LIFO. 3. Compute the gross margin for FIFO method and LIFO method