can someone help and show me all the steps to solve this problem? Need help studying for exam please and thank you!

Example: new equipment The equipment has a 3-year tax life and would be fully depreciated by the straight-line method over 3 years, but a positive pre-tax salvage value at the end of Year 3 , when the project would be closed down. Also, some new working capital would be required, but it would be recovered at the end of the project's life. Revenues and other operating costs are expected to be constant over the project's 3 -year life. What is the project's NPV