Hello, I have been struggling on this problem for several hours now due to the tutorial provided not helping and would like help if possible!

Penn Company uses a periodic inventory system. At the end of the annual accounting period, December 31 of the current year, the accounting records provided the following information for product 1: Units 2,200 Inventory, December 31, prior year For the current year: Purchase, March 21 Purchase, August 1 Inventory, December 31, current year Unit Cost $6.00 7.00 4.00 5.200 3,200 4,600 Required: Compute ending inventory and cost of goods sold for the current year under FIFO, LIFO, and average cost inventory costing methods. (Do not round "Average cost per unit" and round your final answers to nearest whole dollar amount.) FIFO LIFO Average Cost Ending inventory Cost of goods sold