$1.$ Ozarks Managed Care Inc. issued some callable bonds $18$ years ago with $30-$year life at their par value of $$1,000.$ These bonds pay $12\%$ coupon rate with annual payment. The firm just announced that these bonds are being called with $$80$ call premium. What is the yield$-$to$-$call of these bonds? Suppose the bond investors paid the par value at the time of issue. Please round your answer to $2$ decimal places, and skip the $\%$ sign. e$.$g$.,$ just write $1\mathrm{.}23$ instead of $1\mathrm{.}23\%.$