Correct precedence of division operators Say i have the followingv operation - $6/3/6$, i get different answers depending on which division i perform first.
$6/3/6 = 2/6 = .33333...$
$6/3/6 = 6/.5 = 12$
So which answer is correct?

By convention it's done from left to right, but by virtually universal preference it's not done at all; one uses parentheses.
However, I see students writing fractions like this:
$$
\begin{array}{c}
a \\  \hline \\ b \\  \hline \\ c
\end{array}
$$
Similarly they write $\sqrt{b^2 - 4a} c$ or $\sqrt{b^2 - 4}ac$ or even $\sqrt{b^2 -{}}4ac$ when they actually need $\sqrt{b^2 - 4ac}$, etc.
