Help on my work. Any help is much appreciated. Thanks!

Hazelton Corporation uses a periodic inventory system and the LIFO method to value its inventory. The company began 2016 with $73,800 in inventory of its only product. The beginning inventory consisted of the following layers: 5,400 units at $5 per unit 7,800 units at $6 per unit Total $ $ 27,000 $46,800 73,800 During 2016, 7,400 units were purchased at $7 per unit and during 2017, 9,800 units were purchased at $8 per unit. Sales, in units, were 9,800 and 17,600 during 2016 and 2017, respectively. 1. Calculate cost of goods sold for 2016 ? 2017 ? 2. 2016? 2017? Disregarding income tax, determine the LIFO liquidation profit or loss, if any, for