i need the excel formula please

21. Suppose that you decided to make deposits into an educational savings account on each of your daughter's birthdays, starting with her first birthday. Assume that the account rate of return is 7.2%. You deposit $1,800 on your daughter's first birthday and plan to continue depositing the same amount every year. What will be the amount available for your daughter's college expenses on her 18th birthday? Chapter 7 22. If the current inflation rate is 3.6% and you have an investment opportunity that pays 10.9%, then the real rate of interest on your investment is closest to