Assume that Social Security promises you $ 41,000 per year starting when you retire 45 years from today​ (the first $ 41,000 will get paid 45 years from​ now). If your discount rate is 9 %​, compounded​ annually, and you plan to live for 18 years after retiring​ (so that you will receive a total of 19 payments including the first​ one), what is the value today of Social​ Security's promise?