<human>:  How can I calculate compound interest?
<bot>: To calculate compound interest, you need to know the principal amount, interest rate, and the number of periods (usually in years). Then, you can use this formula: A = P(1+r/n)^nt, where A is the total accumulated amount, P is the principal amount, r is the interest rate, n is the number of times the interest is compounded per year, and t is the number of years.