I have tried do others but it is same says incorrect. I have no idea what Im doing wrong. Is it multiply cost to half year convention?

Casper used the following assets in his Schedule C trade or business in the tax year 2017 Casper is a new client and unfortunately does not have a copy of his prior year's tax return. He recalls that all of the assets purchased in prior years used MACRS depreciation (no5179 expense). Casper does not wish to take 179 or bonus depreciation (Use Table6A-1 and Table 6A8) Calculate the current year depreciation allowance for Casper's business. (Round your final answers to the nearest whole dollar amount.) Answer is not complete. Date PurchasedDate Sold Business Asset Computer 1 03/12/2014 Computer 205/05/2014 05/15/2017 Printer Computer 3 05/25/2017 Equipment 03/20/2015 Auto Furniture 1 02/12/2015 08/25/2017 Furniture 2 08/15/2015 Office Bidg 04/0 1/2017 Cost Method se 100% |S 2.600 |5yr MACRS |S 3000 100% |$ 2.600 |Syr MACRS |S 1500 100% |s 2.300 |5yr MACRS |$ 2650 100% IS 3.100 15yr MACRS 100% 2800 17yr MACRS I 90% is 19.600 | 5yr MACRS 100% is 23.500 l7yr MACRS 100% is 100w300T MACRS 08/25/2017 05/01/2017 S3,300 7yr % |s 310.200 139SL