This accounting question does not make sense to me, I don't understand the process to answer this question correctly

Easton Company uses the periodic inventory system and had the following inventory & sales activity for the month of May 2019:

Date

Activity

Quantity

Unit Price

5/1

Beginning Inventory

130

$11

5/5

Purchase

260

$13

5/15

Purchase

150

$15

5/25

Purchase

160

$17

Sales were 430 units at $25.Using the FIFO method, determine the dollar value of Ending Inventory for the month of May.