How do you calculate the cost of ending inventory and the cost of goods sold given the following:

Date Units Produced Cost per unit Ending Inventory

March1 15 Xbox's 360 $275 2 Xbox's from March

April 1 45 Xbox's 360 250 15 Xbox's from April

May 1 60 Xbox's 360 240 12 Xbox's from May

****For cost of ending Inventory I got $7,180 for my answer, and for Cost of goods sold I keep getting $22,595 and the book says the answer is $22,635. I do not know what I am doing wrong. Please show work for how you got the answer if you can. Thank you.