Your firm is considering purchasing new equipment that would cost $10,000,000 ($6,000,000 expensed immediately, and the rest depreciated straight-line over 4 years to a book value of zero, after which the equipment will be useless and worth nothing). Operating revenues at t = 1, 2, 3, and 4 years would be $15,000,000 each year and operating costs would be $9,000,000 each year. The tax rate is 20% and the cost of capital is 15% per year. What is the NPV? Express your answer rounded to the nearest whole dollar (do not include a dollar sign).