Use LIFO to find the ending inventory and cost of goods sold. Please explain the steps if possible. 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. Cost per Unit $760 Total Cost $ 4,560 Date October 1 October 4 October 10 October 13 October 20 October 28 October 30 Transactions Beginning inventory Sale Purchase Sale Purchase Sale Purchase Units 6 4 5 3 4 7 8 770 3,850 780 3,120 790 6,320 $17,850 3. Using LIFO, calculate ending inventory and cost of goods sold at October 31. es Ending inventory Cost of goods sold