Your two children go to college in the future. The first goes to college 10 years from now, and will need $20,000 each year for 4 years of college. The second goes to college in 15 years from now and will need $24,000 each year for the 4 years of college. You wish to make equal, end of year payments between now and the point where your first child goes to college, i.e. 10 years. If the interest rate is assumed to be 10% per year for each of the net 20 years, what must your deposit each year be?