Brock deposited $19,000 into a fund at the beginning of every quarter for 15 years. He then stopped making deposits into the fund and allowed the investment to grow for 6 more years. The fund was growing at 3.10% compounded monthly.

a. What was the accumulated value of the fund at the end of year 15?

Round to the nearest cent

b. What was the accumulated value of the fund at the end of year 21?

Round to the nearest cent

c. What is the total amount of interest earned over the 21-year period?

Round to the nearest cent