The operating cash flow of a project is estimated in $$197,800$ for four years. This project involves capital spending $($machine purchase$)$ in the value of $$650,000,$ and a net working capital injection of $$34,000.$ In the last year, the machine will be able to be sold for $$150,000.$ Considering the tax rate of $21\%,$ especially on the proceedings of the salvage sale, estimate this project's IRR.