You are holding call options on a stock. The stocks beta is 0.65, and you are concerned that the stock market is about to fall. The stock is currently selling for $10 and you hold 1 million options (i.e., you hold 10,000 contracts for 100 shares each). The option delta is 0.70. How much of the market-index portfolio must you buy or sell to hedge your market exposure? (Enter your answer in dollar not in millions.)