Today is your friend's 21st birthday, and she would like to start planning for her retirement. Starting her 66th birthday, she would like to withdraw $60,000 per year for 25 years. To support her retirement needs, she will be depositing money into an investment account on an annual basis. Her first deposit will be on her 22nd birthday, while her last deposit will be on her 65th birthday. The interest rate is expected to remain constant at 4% per year compounded annually. Calculate the amount of annual deposit needed to support her retirement needs. Show your calculation