A machine was purchased for $60,000 and depreciated for 6 years on a straight- line basis under the assumption it would have an 10-year life and a $8,000 residual value. At the beginning of the machine's seventh year, it was recognized that it had 2 years of remaining life left, instead of 4, and that at the end of the 2 years its residual value would be $5,200. What should the annual depreciation be for the machine's remaining years? Journal entries are NOT required.