Please correct what I did wrong, thank you!

Sheffield Inc. uses a perpetual inventory system. Its records show the following for the month of May. Unit Total Explanation Units Cost Cost Date $7 $203 May 1 Inventory 29 May 15 Purchase 26 8 208 (44) May 18 Sale May 24 Purchase 41 9 369 $780 Total 52 (a) X Your answer is incorrect. Calculate the cost of goods sold for May and the ending inventory at May 31 using the FIFO formula. Cost of goods sold $ 328.768 Ending Inventory $ 451.232