\[\boxed{\mathbf{92}.}\]
\[\left( \sqrt{7} + 3 \right)^{2} -\]
\[- \left( \sqrt{6} + \sqrt{3} \right)\left( \sqrt{3} - \sqrt{6} \right) = 7 +\]
\[+ 6\sqrt{7} + 9 - 3 + 6 = 19 + 6\sqrt{7}.\]