A machine costing $1,031,250 with a five-year useful life and a $103,125 salvage value is installed in the factory on January 1 . The factory manager estimates the machine will produce 27,500 units of product during its life. It actually produces the following units: 4,500 in Year 1; 5,500 in Year 2; 6,500 in Year 3; 6,500 in Year 4; and 4,500 in Year 5. Calculate annual depreciation expense using the straight-line, units-of-production, and double-declining baiance methods