Exercise 5-5 5^(A) Perpetual: Inventory costing P3 Refer to the information in Omega^(-)Exercise 5-3 and assume the perpetual inventory system is used. Determine the costs assigned to ending inventory and to cost of goods sold using (a) specific identification, (b) weighted average, (c) FIFO, and (d) LIFO. (Round per unit costs and inventory amounts to cents.) For specific identification, ending inventory consists of 200 units, where 180 are from the January 30 purchase, 5 are from the January 20 purchase, and 15 are from beginning inventory.

How do I figure out FIFO? Please provide step by step instructions and easy to understand as well.