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 $189,000; its operating expenses are $33,000 per year. A replacement machine would cost $231,000, have a useful life of nine years, and would require $11,000 per year in operating expenses, It has an expected salvage value of $60,000 after nine years. The current disposal value of the old machine is $71,000; if it is kept nine more years, its residual value would be $13,000. Required Calculate the total costs in keeping the old machine and purchase a new machine. Should the old machine be replaced