What's the logic behind that?

Logic Level 3

$\begin{aligned}7\forall 6&=&7\\ 4\forall 2&=&12\\ 6\forall 3&=&120\\ 8\forall 6&=&?\end{aligned}$

Define a binary operation $\forall$ such that the conditions above are fulfilled. Find function of this binary operation. And evaluate $? +8^2$ .