how to calculate annual percentage rate for cd?
['Deposit amount ($):', 'CD term length:', 'APY (%):? ... ', 'convert APY to decimal and add 1(required)', 'Compounding period as daily(required)', 'APY into annual interest rate: (APY+1)^(1/n)(required)', 'Minus 1(required)', 'Interest rate (%) (before compounding)(required)']