hi there what formula would I used in excel solve this equation?

a Solving for the Annuity that will last N years, Given a Current Portfolio Value and the expected Future Rate of Return If you now have $1,600,000.00 in an investment portfolio, you expect to earn a nominal rate of 6.10% per year. and you expect to live 20 more years, how much can you withdraw each year, beginning today, such that at the end of 20 years, the value of your portfolio will be zero? What if you expect the rate of inflation to be 2.20% Annual Withdrawal Beginning Today Annual Withdrawal Beginning 1 year from Today= Annual Withrawal Beginning Today with Inflation $22,000.00 to you in 25 years," offers the investment broker. b Solving for the Rate Given a FV and a PV "Invest $3,000.00 today and I'll return What annual rate of return is being promised? PV- $3,000.00 FV- $22,000.00 Term= 25 Implied Rate of Return=