Today is Susan's 30th birthday. Assume she deposits $8,000 today and $8,000 on each of her birthdays until she turns 60 (whem she makes her last deposit) into an account earning 9%. She plans to withdraw equal amouunts each year frm the time she turns 61 until she is 80. In addition, when she turns 80, she wishes to leave $100,000 to her grandchildren. How much should the annual withdrawals be?