need help. thank you in advance

You have a loan outstanding. It requires making in annual payments of $5,000 each at the end of the next nine years Your bank has offered to allow you to skip making the night payments in liou of making one large payment at the end of the loan's form in nine years. If the interest rate on the loan is what final payment will the bank require you to make so that it is indifferent to the two forms of payment