The Donut Stop acquired equipment for $25 , 000 . The company uses straight-line depreciation and estimates a residual value of $5 , 000 and a four-year service life. At the end of the second year, the company estimates that the equipment will be useful for four additional years, for a total service life of six years rather than the original four. At the same time, the company also changed the estimated residual value to $3 , 000 from the original estimate of $5 , 000 . Required: Calculate how much The Donut Stop should record each year for depreciation in years 3 to 6