Compute the current yield of $a(n)8\mathrm{.}5\%,20-$year bond that is currently priced in the market at $$1,225.$ Use annual compounding to find the promised yield on this bond. Repeat the promised yield calculation, but this time use semiannual compounding to find yield$-$to$-$maturity.

The current yield is $\%.($Round to two decimal places.$)$