Eras International$$s balance sheet shows $$350$ million in debt, $$75$ million in preferred stock, and $$280$ million in total common equity. Eras' tax rate is $30\%,$ rd $=6\mathrm{.}7\%,$ rps $=6\mathrm{.}2\%,$ and rs $=11\mathrm{.}3\%.$ If Eras has a target capital structure of $20\%$ debt, $10\%$ preferred stock, and $70\%$ common stock, what is its WACC?