Assuming the experimental mass of _6^12 C as 12 u, the mass defect of _6^12 C atom is ____ MeV / c^2. (Mass of proton =1.00727 u. mass of neutron…

Assuming the experimental mass of $\displaystyle { }_6^{12} C$ as $\displaystyle 12$ u , the mass defect of $\displaystyle { }_6^{12} C$ atom is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{MeV} / \mathrm{c}^2$. (Mass of proton $\displaystyle =1.00727 \mathrm{u}$. mass of neutron $\displaystyle =1.00866 \mathrm{u}, 1 \mathrm{u}=931.5 \mathrm{MeV} / \mathrm{c}^2$ and c is the speed of the light in vacuum).