Could you please explain and show your work?

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The Woodruff Corporation purchased a piece of equipment three years ago for $265,000. It has an asset depreciation range (ADR) midpoint of eight years. The old equipment can be sold for $82,000. A new piece of equipment can be purchased for $327,000. It also has an ADR of eight years. Additionally, the firm has the option to spend $20,000 to overhaul and repair the old equipment; assume that if they do so, the operating cash flows for the old machine below will be $5,000 higher in each year but there are no other changes. Assume the old and new equipment would provide the following operating cash flows over the next six years