Suppose you believe that Du Pont's stock price is going to decline from its current level of $ 83.51 sometime during the next 5 months. For $ 637.16 you could buy a 5-month put option giving you the right to sell 100 shares at a price of $70 per share. If you bought a 100-share contract for $ 637.16 and Du Pont's stock price actually changed to $ 63.14 , your net profit (or loss) after exercising the option would be ______? Show your answer to the nearest .01. Do not use $ or , signs in your answer. Use a - sign if you lose money on the contract.