Good Paper company owns a paper mill near a small forest. They have the right to harvest wood for another 4 years, after which the paper mill will close. The main machine just broke down and would require significant repairs to fix. They are also considering two new machines, a big one and a smaller one. To evaluate the projects, they are using a nominal after-tax discount rate of 10% p.a. The corporate tax rate is 30%. Expected inflation is 3% p.a. To help with their decision, they commissioned a consulting firm to write a report on those three options. They have received the report but have not paid the $8,000 invoice yet. The consulting fimm noted that the big machine could not be delivered for another four years, so this option is not feasible. The main result from the report are the following: The current machine is so damaged that it has no resell value today. It would cost $20,000 to repair the current machine. This expense would be fully deducted immediately (no depreciation). It can generate annual sales of $14.000 per year and would incur annual maintenance costs of only $5,000 per year. These revenues and costs would be fixed in nominal terms. When the mill closes, the machine will have no resale value and will be disposed of The small machine would require an initial investment of $30,000. It can generate annual sales of $10,000 per year and would incur annual maintenance costs of only $3,000 per year. These revemes and costs would be fixed in nominal terms. This machine would be subject to straight-line depreciation over its useful life of 6 years. When the mill closes, the machine will be resold for $10,000 What is the NPV of repairing the current machine? Show all your calculations