Rexton Oil is an all$-$equity firm with $20$ million of shares outstanding. Rexton currently has a cash flow of $$100$ Million of USDs and expects future free cash flows of $$100$ Millions per year. Management plans to use the cash to expand the firm's operations, which will in turn increase future cash free cash flows to $$500$ Millions per year. If the cost of capital of Rexton's investments is $8\%,$ calculate the stock price for the company if the expansion where to happen. Note: Express your answers in strictly numerical terms.