Can you please explain to me how do you get your PV annuity through excel. How do you compute the interest with the number of years.

The Atlantic Medical Clinic can purchase a new computer system that will save $5,000 annually in billing costs. The computer system will last for five years and have no salvage value. Use Excel or a financial calculator to solve. Round answers to the nearest dollar. Required: Up to how much should the Atlantic Medical Clinic be willing to pay for the new computer system if the clinic's required rate of return is: Present Value 1. Eight percent 2. Ten percent