not sure what i did wrong :/ thanks!

for the second question I believe it is 265

A fire destroyed all ABC's merchandise inventory on October 1. On January 1 the balance in inventory was: 2806. . From January 1-October 1 o sales were 8418 o purchases were 7071.12 o the mark up on cost was 40% a. The gross profit margin is (as %, e.g. 34.23% would entered as 34.23): 0.8 x x b. Estimated COGS of inventory sold: 6734.40 c. Estimated inventory destroyed: 4489.6 x Information for inventory for ABC follows. Cost (carrying value) 265.00 Selling Price 324.00 Selling costs 45.36 The lower or cost and net realizable value for this item is: X Answer: 278.64