can you show the work by hand?

4. A warehouse is currently sitting empty, but can be rented out to a third party for $100,000 a year. A project is proposed in the warehouse by your company which will require an investment of $200,000 and will be depreciated using MACRS Over a five year life. At the end of the project in THREE YEARS, the machinery will be sold for $50,000. Products sold will be 20,000 units per year at $30 each. Variable costs will be 35 percent of sales. Fixed costs (not counting the warehouse) will be $20,000 per year. Working capital will be $50,000. The tax rate is 30 percent. If the interest rate is 10 percent, what is the NPV of this project