What is the discounted payback period if the initial cost is $$\backslash$$ $250,000$$ and the cash flow for the next $30$ years is $$\backslash$$ $30,000$$ $($Hint: notice that the cash flow is the same for all years $).$ The discount rate is $$8\backslash \%.$$ $16\mathrm{.}214\mathrm{.}2712\mathrm{.}2718\mathrm{.}2710\mathrm{.}27$