Green Vegetable Mfg$.$ Co$.$ purchased equipment on January $1,2016,$ at a cost of $$800,000.$ The equipment is expected to have a service life of ten years, or $40,000$ hours, and a residual value of $$70,000.$ During $2016,$ the equipment was operated for $5,000$ hours, and during $2017,$ it was operated for $7,000$ hours.

Required:

Fill in the blanks below with the depreciation expense $($to the nearest whole dollar$)$ for this machine in $2016$ and $2017$ under each of the following depreciation methods.

$20162017$

a$.$ Straight$-$line method $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

b$.$ Activity method $($hours$)\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

c$.$ Double declining balance method $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

d$.$ Sum$-$of$-$the$-$years$-$digits method $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$