No clue how to do this?

E6-5 Inferring Missing Amounts Based on Income Statement Relationships [LO 6-2, LO 6-5] Supply the missing dollar amounts for each of the following independent cases Cost of Goods Available for Sale Cost of Goods Sold Cost of Ending Inventory Cases Gross Profit Revenue In ven S 1,250$6501350 860 1,450 750 650 660 850 800 1,350 750 1,200 950 1,150 1,450 1,360 1,550 600 1,060