You have just been hired into the finance department of Ekud, Inc. On your first day, your boss confesses that the firm has been using the same WACC of $10\%$ for an extremely long time, and there are concerns that it may not accurately represent the firm$$s risk profile. Your boss asks you $($with all of your new finance knowledge$)$ to estimate the firm$$s WACC. The firm has $$6$ million of short$-$term debt and $$12$ million of long$-$term debt. The coupon rate on the short$-$term debt is $4\%$ and the yield to maturity is $5\%.$ The coupon rate on the long$-$term debt is $7\%$ and the yield to maturity is $8\%.$ The firm also has $$20$ million of preferred stock, which has a required rate of return of $11\%.$ Finally, the firm has $$50$ million of common stock. The beta is $2\mathrm{.}2,$ the risk$-$free rate is $2\%,$ the market risk premium is $6\%,$ and the tax rate is $21\%.$ Please estimate the firm$$s WACC.