You founded your own firm three years ago. You initially contributed $200,000 of your own money and in return you received 2 million shares of stock. Since then, you have sold an additional 1 million shares of stock to angel investors. You are now considering raising capital from a venture capital firm. This venture capital firm would invest $4 million and would receive 2 million newly issued shares in return. The post-money valuation of your firm is closest to ________.