Depreciation by three methods; partial yearsLayton Company purchased tool sharpening equipment on October $1$ for $$80,190.$ The equipment was expected to have a useful life of $3$ years or $6,480$ operating hours, and a residual value of $$2,430.$ The equip was used for $1,200$ hours during Year $1,2,300$ hours in Year $2,1,900$ hours in Year $3,$ and $1,080$ hours in Year $4.$Required:Determine the amount of depreciation expense for the years ended December $31,$ Year $1,$ Year $2,$ Year $3,$ and Year $4,$ by $($a$)$ the straight$-$line method, $($b$)$ the units$-$of$-$activity method, and $($c$)$ the double$-$declining balance method.Note: FOR DECLINING BALANCE ONLY, round the multiplier to four decimal places. Then round the answer for each year to the nearest whole dollar.a$.$ Straight$-$line methodYearAmountYear $1$Year $2$Year $3$Year $4$b$.$ Units$-$of$-$activity methodYearYear $1$Year $2$Year $3$Double$-$declining$-$balance methodYearYear $1$Year $2$Year $3$Year