Question 983453
P=po(1+r/n)^nt
=200(1.02)^3=200*(1.0612)=212.24 (round only at the end)

I have year 3, and now I need year 5.

=200(1.02)^5=200*1.1040=220.82.  Again, I rounded here, but the answer is on the calculator, and I don't round until the end.  That is why the 0.82 is there.

That isn't the answer.
The amount between years 3 and 5 is $8.58.