M = P \frac{r(1+r)^n}{(1+r)^n - 1}
M = 25000 \times \frac{0.00625 \times (1+0.00625)^{60}}{(1+0.00625)^{60} - 1}
M = 25000 \times \frac{0.00625 \times (1.45329...)}{(1.45329...) - 1}
M = 25000 \times \frac{0.009083...}{0.45329...}
M = 25000 \times 0.020038...
M = \$500.95
$ M = P \frac{r(1+r)^n}{(1+r)^n - 1} $