Wildhorse Excavating Inc. is purchasing a bulldozer. The equipment has a price of $100,700. The manufacturer has offered a payment plan that would allow Wildhorse to make 6 equal annual payments of $22,448.02, with the first payment due one year after the purchase.

(a). How much total interest will Wildhorse pay on this payment plan?

there is a part b but I have to complete part a before it allows me to see that part.