If Gayle contributes $1000 to her RRSP at the end of every quarter for the next 10

Question:

If Gayle contributes $1000 to her RRSP at the end of every quarter for the next 10 years and then contributes $1000 at each month’s end for the subsequent 15 years, how much will she have in her RRSP at the end of the 25 years? Assume that the RRSP earns 8.5% compounded semiannually.