Chamberlain Company wants to issue new $17-$year bonds for some much$-$needed expansion projects. The company currently has $7\mathrm{.}8$ percent coupon bonds on the market that sell for $$865\mathrm{.}50,$ make semiannual payments, and mature in $17$ years. What coupon rate should the company set on its new bonds if it wants them to sell at par? Assume a par value of $$1,000.$