A machine was purchased for $37,000 and depreciated for 5 years on a straight-line basis under the assumption it would have a 10-year life and a $1,000 residual value. At the beginning of the machine's sixth year, it was recognized that it had 3 years of remaining life left, instead of five, and that at the end of the 3 years its residual value would be $1,600. What should the annual depreciation be for the machine's remaining years