Step-by-step answer:
The question is most probably missing parentheses and should read
9! ./ (6!3!)
= 9*8*7 / (3*2*1)
=84
The question as-is should be interpreted as follows, following the normal PEDMAS rules:
(9!/6!) * 3!
= (9*8*7)*(3*2*1)
= 504 * 6
= 3040
Note that when interpreting typeset formulas, all denominators and numerators should be enclosed in parentheses to translate correctly mathematical formulas. Most automated translators / scanners are not capable of doing that.
