please show work done and formulas used

2- Stella Co. uses a perpetual inventory system. The following information is available for the month of June. Purchases Sales June 1 (Balance on hand) 1,200 @ $3 June 5 700 @ $7 June 10 600 @ $3.2 June 12 500 @ $8 June 17 1,000 @ $3.3 June 17 300 @ $8 June 22 1,300 @ $3.4 June 201,100 @ $8.5 June 28 1,600 @ $3.5 June 25 800 m $8.5 June 30 1,300 @ $8.5 Prepare a schedule to compute the ending inventory at June 30, under both the FIFO and average-cost methods. (Round unit price averages to four decimal places)