This year, DaFirm's EBITDA is $

$4$

$0$

$$million and its profits are taxed at

$2$

$1$

$\%$

$.$

$$ DaFirm is in a steady state, so that its annual capital expenditures of $

$1$

$0$

$$million always just replaces the depreciated capital and its net working capital always remains at $

$5$

$$million$.$ What is DaFirm's free cash flow for this year? answer is $23\mathrm{.}7$