On his eighth birthday, a boy inherits $8000 which is to be used for his college education. The money is deposited into a trust fund that will pay him R dollars on his 18th, 19th, 20th, and 21st birthdays. Find R if the money earns 7% interest compounded annually. The money deposited will pay the boy $ on his 18th, 20th, and 21st birthdays. (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)