TB Problem Qu. 10-225 (Algo) Computing depreciation under different methods A machine costing $843,750 with a five-year useful life and a $84,375 salvage value is installed in the factory on January 1. The factory manager estimates the machine will produce 22,500 units of product during its life. It actually produces the following units: 3,500 in Year 1; 4,500 in Year 2; 5,500 in Year 3; 5,500 in Year 4; and 3,500 in Year 5. Calculate annual depreciation expense using the straight-line, units-of-production, and double-declining balance methods