Frank is 21 years old and wants to have his retirement savings completed by the time he is 35 years old. Frank plans to retire at 60 years old and wants to be able to draw out $4000 each month until he is 88. If Frank can earn 11% interest on his investments from now until he retires and will switch it over to a 6% investment after he retires, how much does he need to save each month from now until he is 35 in order to meet his goals?