You are beginning a college savings plan to cover tuition for your two future geniuses. To do that, you will deposit money into a fund each month, starting next month, for 18 years. After that time, any money in the fund will continue to earn interest, even though no additional deposits are being made. The fund's rate of return is expected to be 9% APR, compounded monthly.

Baby Genius #1 will enroll in Ivy League U. in 18 years, be enrolled for 4 years, and pay tuition at the beginning of each year of $60,000 annually. Baby Genius #2 will enroll at Party School U. two years later, be enrolled for 5 years, and pay tuition at the beginning of each year of $6,500.

How much must your monthly deposit be?