You are planning to save for retirement over the next 20 years. To do this, you will invest $1,200 a month in a stock account and $800 a month in a bond account. The return of the stock account is expected to be 18 percent and the bond account will pay 15 percent. When you retire, you will combine your money into an account with 9 percent return. How much can you withdraw each month from your account assuming a 25-year withdrawal period?