When he started work on his twenty-second birthday, D. B. Cooper decided to invest money each month.


When he started labor on his twenty-second birthday, D. B. Cooper resolute to endow specie each month after a while the external of graceful a millionaire by the age he reaches age 65. If he expects his invesnnents to yield 18% per annum, compounded monthly, how abundant should he endow each month?