please solve these two, thanks!

Rodney would like to save $54,000 over the next 15 years. How much must he deposit at the beginning of each month into his savings account if the account earns j12=4.8% ? Your Answer: Answer Leon would like to have a retirement income of $2,500 per month (beginning of month payments). How much must he have in his retirement fund on the day that he retires if he plans to live for 28 years? Assume that the account will earn j12=3.6%. Your