first city bank pays 8 percent simple interest on its savings account balances, wheras second city bank pays 8 percent interest compounded annually. if you made a 71,000 deposit in each bank, how much more money would you earn from your second city bank?

I understand the equation for compound interest isA = P*(1+(r/n))^nt

And I understand that

P = principal amount (the initial amount you borrow or deposit). r = annual rate of interest (as a decimal). t = number of years the amount is deposited or borrowed for. A = amount of money accumulated after n years, including interest. n = number of times the interest is compounded per year.

But i dont understand how to^nt on my calculator.

Please help and show steps on how to complete it. I understand the concept, but not the application, thanks!