Assume the following data for a machine that was purchased on January 1: Initial Cost: $250,000 Expected Useful Life: 8 years Estimated Residual Value: $10,000 At the beginning of the fourth year, the company estimates that the machine's remaining useful life is ten years (instead of five) and that its residual value is $5,000 (instead of $10,000). The depreciation expense for each of the remaining ten years would be: $[amount]