I don't understand how to do it

Gladstone Company tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the time of each sale, as if it uses a perpetual inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31 Unit Cost Transactions Units 1,95e $ 5e Beginning inventory, January 1 Transactions during the year: a. Purchase, January 30 2,650 62 (1,480) 1,230 (2,e50) 949)b. Sale, March 14 ($100 each) c. Purchase, May 1 d. Sale, August 31 ($100 each) 80 1. Calculate the cost of goods sold and ending inventory for Gladstone Company assuming it applies the LIFO cost method perpetually at the time of each sale Answer is complete but not entirely correct. Cost of Goods Sold |$ 3.530 Ending Inventory 104,440