A capacitor of capacitance $2\mathrm{.}20\backslash$times $105$ F initially stores a charge of Q $=9\mathrm{.}80\backslash$times $103$ coulomb. The capacitor is then connected across the ends of a $8\mathrm{.}00\backslash$times $103$ H inductor, making an LC circuit, and starts discharging. What is the total energy stored in this circuit when the capacitor is halfway discharged, i$.$e$.,$ when the remaining charge in the capacitor is Q$/2($in J$)?$