Lets say that you have a friend who is 24 years old and she is having her first child. How much money would she have to invest monthly (assuming monthly compounding) in order to ensure that there is $250,000 in an account for her child in 18 years. She forecasts that she will receive a 7% annual rate of return on the money she invests consistently for the full 18 years. (use two decimal places in your answer)