Congratulations, you've won the lottery! The jackpot was $10,000,000, and you have an important choice to make. You can either take your winnings in annual payments of $500,000 spread out over 20 payments (with the first payment coming immediately and then at the end of each year for the next 19 years), or you can take a one-time payment of $6,600,000 right now. What is the present value of your winnings if you opt for the annual payments and the market interest rate is 5%? Give your answer to two decimals.