on january $1,$ year $1$ poultry processing company purchased a freezer and related installation equipment for $$63,600.$ the equipment had a three year estimated life with a $$3,300$ salvage value. straight line depreciation was used. at the beginning of year $3,$ poultry processing revised the expected life of the asset to four years rather than three years. the salvage value was revised to $$2,300.$ compute the depreciation expense for each of the four years, year $1-$ year $4$