You bought a $20-$year, $9\mathrm{.}8\%$ semi$-$annual coupon bond today and the current market rate of return is $3\mathrm{.}39\%.$ The bond is callable in $4$ years with a $$92$ call premium. What price did you pay for your bond?

Please help me with this one, I tried somes other solve but couldnt find out the answer. My professor made it $1,318\mathrm{.}32.$ thank you so much.