You are saving for the college education of you three children. One will begin college 15 years from today and the second one will begin 17 years from today. The third one will start needing financial support 21 years from today. Your first kid will stay six years in college, and you estimate that the first semiannual payment will be $20,000 and grow 1% semiannually until he finishes college. Your second kid will stay 4 years in college, and you estimate that the first semiannual payment will be $30,000 and grow 3% semiannually until he finishes college. The third kid first semiannual payment will be $12,000 and will grow 2% every six months forever. For all children, payments must occur at the end of each semiannual period. The appropriate stated interest rate is 7%. How much money must you deposit in an account semiannually to fund your childrens? Your deposits begin one and a half years from today and are made at the beginning of each semiannual period. You will make your last deposit when your oldest kid enters college.