A machine costing $$297,500$ with a four$-$year life and an estimated $$20,000$ salvage value is installed in Luther Company's factory on January $1.$ The factory manager estimates the machine will produce $555,000$ units of product during its life. It actually produces the following units: $260,000$ in $15t$ year, $124,600$ in $2nd$ year, $121,800$ in $3$rd year, $55,200$ in $4$th 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.$)$

Compute depreciation for each year $($and total depreciation of all years combined$)$ for the machine under each depreciation method.

$\backslash$table$[[$Straight$-$Line Method,Depreciation Expense,Cost minus salvage,$-],[,$Estimated useful life $($years$)],[,,,],[,,,],[$Straight$-$Line Depreciation$],[$Year$,$Depreciation Expense,,$],[,,,],[2],[3],[4],[\frac{4}{\text{T}\text{o}\text{t}\text{a}\text{l}}$