Please complete on excel and show equations. Thanks!

A factory is considering the purchase of a new machine. The machine costs $100,000 and will be depreciated on a straight-line basis over its 10-year life. The machine is expected to save the company $70,000 per year, but in order to operate it, the factory must hire an employee with a salary of $40,000. What is the NPV of the purchase of the new machine if the relevant discount rate is 12% and the corporate tax rate is 30%?