how to solve this? I dont get hot to do PVAF+annual saving

The Atlantic Medical Clinic can purchase a new computer system that will save $9,000 annually in billing costs. The computer system will last for eleven 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. Nine percent 2. Ten percent