3. Shrek the ogre invented a new operation symbol:
$$
\begin{array}{l}
6 @ 4=6 \times 6-4=32 \\
4 @ 6=4 \times 4-6=10 \\
5 @ 3=5 \times 5-3=22
\end{array}
$$

Then, the result of $8 @ 11$ is $\qquad$
$53$