Sheridan Industries has $8$ percent coupon bonds outstanding. These bonds have a market price of $$945\mathrm{.}60,$ pay interest semiannually, and will mature in $6$ years. If the tax rate is $35$ percent, what are the pre$-$tax cost and after$-$tax cost of this debt? $($Round answers to $2$ decimal places, e$.$g$.52\mathrm{.}75\%.)$

Pre$-$tax cost $\%$

After$-$tax cost $\%$