A machine costing $208,800 with a four-year life and an estimated $18,000 salvage value is installed in Luther Company's factory on January 1. The factory manager estimates the machine will produce 482,000 units of product during its life. It actually produces the following units: 122,600 in 1st year, 124,100 in 2nd year, 121,500 in 3rd year, 123,800 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. Straight-Line Depreciation Year Expense Total Units of Production Depreciable Depreciation Depreciation per unit Year Units Expense Total DDB Depreciation for the Pe End of Period Beginning of Depreciation Depreciation Accumulated Year Period Book Rate Value Expense Depreciation Book Value Total