Please help with the following. Kindly pay close attention to the given units in year 1,2,3,4

A machine costing $211,200 with a four-year life and an estimated $16,000 salvage value Is Installed in Luther Company's factory on January 1. The factory manager estimates the machine will produce 488,000 units of product during its life. It actually produces the following units: year 1, 123,200; year 2, 123,600; year 3, 119,900; and year 4, 131,300. 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.) Answer is complete but not entirely correct. Year Units of Production Depreciable Depreciation Units per unit 121,900 x $ 0.40 124,200 X $ 0.40 121,100 $ 0.40 120,000 $ 0.40 Depreciation Expense $ 48.760 X 1 2 49 680 X 3 4 48,440 X 48,000 X 194,880 Total $ 487,200 $