What is the amount of interests earned on interests for an initial investment of $$1$ million over $20$ years, at a compound yearly rate of $3\mathrm{.}25\%?$

a$.$

$$895,837\mathrm{.}92$

b$.$

$$1,650,000$

c$.$

$$650,000$

d$.$

$$245,837\mathrm{.}92$