could u guys answer this compound interest question?

Question

$1040 invested for 20 years at 15% p.a. compounded half yearly...could u guys tell me how to transsfer yearly to monthly...and etc..

Answer 1

Compounded semiannually
P = 1,040(1 + 0.15/2)^(2*20)
Compounded quarterly
P = 1,040(1 + 0.15/4)^(4*20)
Compounded monthly,
P = 1,040(1 + 0.15/12)^(12*20)
Compounded daily,
P = 1,040(1 + 0.15/365)^(365*20)