Depreciation by three methods; partial yearsLayton Company purchased tool sharpening equipment on October $1$ for $$36,180.$ The equipment was expected to have a useful life of $3$ years or $7,020$ operating hours, and a residual value of $$1,080.$ The equipment was used for $1,300$ hours during Year $1,2,500$ hours in Year $2,2,100$ hours in Year $3,$ and $1,120$ 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$$fill in the blank $1$Year $2$$fill in the blank $2$Year $3$$fill in the blank $3$Year $4$$fill in the blank $4$b$.$ Units$-$of$-$activity methodYearAmountYear $1$$fill in the blank $5$Year $2$$fill in the blank $6$Year $3$$fill in the blank $7$Year $4$$fill in the blank $8$c$.$ Double$-$declining$-$balance methodYearAmountYear $1$$fill in the blank $9$Year $2$$fill in the blank $10$Year $3$$fill in the blank $11$Year $4$$fill in the blank $12$