Your firm is considering purchasing new equipment that would cost $$10,000,000($$$3,000,000$ 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 $$16,000,000$ each year and operating costs would be $$8,000,000$ each year. The tax rate is $20\%$ and the cost of capital is $15\%$ per year. What is the NPV$?$