You decided that it's time to start saving for your retirement. To do this, over the next 20 years you will invest $1,300 a month in a stock account and $1,000 a month in a bond account. The return of the stock account is expected to be 10 percent, and the bond account will pay 5 percent. When you retire, you will combine the accumulated money from both accounts into one account with a 8 percent return. How much can you withdraw each month from your account assuming a 15-year withdrawal period?