where do you get $21500?$

The inventory Of product Y at January 1 consisted of 15,000 units valued at a cost Of Sl 12,500. Purchases during the year were: Mar 5 20,500 units @ $7.75 per unit = $158,875 May 12 33,000 units @ $800 per unit $264,000 sep 15 23.000 units @ $8.30 per unit = $190,900 Nov 28 8,500 units @ $8.44 per unit = $71,740 On December 31, there were 30,000 units on hand. Compute the December 31 inventory using the first-in, first-out method.