Please help, I am unsure how to go about this problem.

Chapter 7-Valuation of Inventories 1. Matlock Corporation sells item A as part of its product line. Information as to balances on hand, purchases, and sales of item A are given in the following table for the first six months of 2020. a. Compute the ending inventory at June 30 under the perpetual LIFO inventory pricing method. b. Compute the cost of goods sold for the first six months under the periodic FIFO inventory pricing method