Your brother turned 35 today, and he is planning to save $64,800 per year for retirement, with the first deposit to be made one year from today. He will invest in a mutual fund that's expected to provide a return of 7.5% per year. He plans to retire 30 years from today, when he turns 65, and he expects to live for 25 years after retirement, to age 90. Under these assumptions, how much can he spend each year after he retires? Assume that his first withdrawal will be made at the end of his first retirement year, and that he will continue to invest in the same mutual fund after retirement.