A machine costing $211,200 with a four-year life and an estimated $20,000 salvage value is installed in Luther Company's factory on January 1. The factory manager estimates the machine will produce 478,000 units of product during its life. It actually produces the following units: 123,000 in 1st year; 123,700 in 2nd year; 120,600 in 3rd year; 120,700 in 4th year. The total number of units produced by the end of year 4 exceeds the original estimate -this difference was not predicted. (The machine must not be depreciated below its estimated salvage value.) Required: Compute depreciation for each year (and total depreciation of all years combined) for the machine under each depreciation method. (Round your per unit depreciation to 2 decimal places. Round your answers to the nearest whole dollar.) Year Expense Total Year Dep Units per unit Total Beginning of Year Period Book Accumulated Book Value Rate Expense D Total