I don't know what I am doing wrong with this one.

If you respond please explain so I can learn. Thank You

Required Information [The following information applies to the questions displayed below.] Sandra's Purse Boutique has the following transactions related to its top-selling Gucci purse for the month of October. Sandra's Purse Boutique uses a periodic inventory system. Date Transactions Units Unit Cost Total Cost October 1 Beginning inventory 6 $ 890 $ 5,340 October 4 Sale 4 October le Purchase 5 9ee 4,500 October 13 Sale 3 October 20 Purchase 4 910 3,640 October 28 Sale 7 October 3e Purchase 6 920 5,520 $19, eee 3. Using LIFO. calculate ending inventory and cost of goods sold at October 31. Ending inventory Cost of goods sold