Comptronix is a listed tech firm, whose debt and equity have market values of $$300$ million and $$450$ million, respectively. Comptronix shares have a beta of $1\mathrm{.}45,$ while the firm's before$-$tax cost of debt is $6\mathrm{.}31\%.$ The risk$-$free interest rate is $4\%$ p$.$a$.$ and the market risk premium is $6\%$ p$.$a$.$ Comptronix's free cash flow at the end of the current year is expected to be $$25$ million, and its free cash flows are expected to grow at $3\%$ p$.$a$.$ What is the present value of Comptronix's debt tax shield, if it pays tax at $30\%$ and incurs no financial distress costs?