Assuming there were no payments made, what's the formula to calculate accumulated interest? I know the initial principal balance, the number of days where interest compounded daily, and the APR.
FV=P(1+r)^n
so
Int=P(1+r)^(n) -P
If $2000 is invested for 4 years and interest is 5%p.a. accumulated daily then
P=2000
r=0.05/365
n=4*365
