A wind turbine will cost $$2$ million to build and install. The PVCCATS works out to $25\%$ of the investment. The turbine will operate for $20$ years and produce sales of $$300,000$ at the end of each year. The operating margin $($EBIT margin$)$ is $80\%$ and the tax rate is $25\%.$ There are no changes to net working capital and no salvage. The discount rate is $8\%.$

What is the present value of the Operating cash flow annuity? $($closest answer$)$