GHI Corp. has $$20$ million par value of debt. This debt has $10$ years to maturity and is currently trading at $99\mathrm{.}45$ paying a $5\mathrm{.}5\%$ coupon. The common stock of GHI trades for $$25$ per share and there are $2$ million shares outstanding. The beta of GHI stock is $0\mathrm{.}8,$ the risk$-$free rate is $4\%,$ and the equity risk premium is expected to be $5\%.$ GHI has no preferred stock and a tax rate of $21\%.$ What is GHI$$s WACC?

$($Don$\text{'}$t round intermediate calculations and give at least $4$ significant digits in your answer$)$