Tesla management are trying to decide whether to keep an older piece of machinery or buy a replacement. Management was presented with the following information to assist in their decision: A machine purchased three years ago for $309,000 has a current book value using straight-line depreciation of $185,000; its operating expenses are $30,000 per year. A replacement machine would cost $234,000, have a useful life of nine years, and would require $13,000 per year in operating expenses. It has an expected salvage value of $67,000 after nine years. The current disposal value of the old machine is $80,000; if it is kept nine more years, its residual value would be $17,000. Required Calculate the total costs in keeping the old machine and purchase a new machine. Should the old machine be replaced