To ensure his retirement income, a 40-year old man plans to purchase annuity when he turns 65. The annuity will pay $7,500 at the end of each month for 20 years, and the value is calculated at 5% interest, compounding monthly. To pay for this annuity, he starts making annual level deposits in a mutual fund, which earns 8% interest each year. He makes the first one right away, and makes deposits at the beginning of each year for 25 years. How much does he need to deposit each year in order to save enough to buy his annuity