Help w/ PV of annuity

You have entered into an agreement to purchase a local accounting firm. The agreement specifies you will pay the seller $143,000 at the end of each year for six years. What is the cost today of the purchase, assuming a discount rate of (a) 5%, (b) 7%, or (c) 9% ? Note: Use tables, Excel, or a financial calculator. Round your answers to 2 decimal places. (FV of \$1, PV of \$1. EVA of S1, and PVA of \$1)