A machine purchased three years ago for $$311,000$ has a current book value using straight$-$line depreciation of $$184,000$; its operating expenses are $$38,000$ per year. A replacement machine would cost $$237,000,$ have a useful life of nine years, and would require $$10,000$ per year in operating expenses. It has an expected salvage value of $$77,000$ after nine years. The current disposal value of the old machine is $$87,000$; if it is kept nine more years, its residual value would be $$16,000.$