A real estate developer offers to sell you some prime real estate for $557,000 today. You agree to pay $261,000 in exactly 6 months but the balance in exactly 18 months from today when you expect to receive some cash from an investment. How much will you need to pay the developer in 18 months if the interest rate is 13.3% per annum compounding monthly (rounded to the nearest dollar; don't show $ sign or commas)