You forgot to use PEMDAS. Parenthesis, Exponents, Multiplication, Division, Addition and Subtraction!
All remember PEMDAS!
So first what we have to do is multiply 3 by itself, so 3 x 3 which is 9.
So now our problem looks like this
184 - [ (45 / 5) x 9] - 6
( I added brackets and parenthesis so it looks simpler)
So 45 divided by 5 is 9
So now it looks like
184 - (9 x 9) - 6
So 9 x 9 is 81.
So now it's
184 - 81 - 6.
184 - 81 is 103
103 - 6 is 97
I hope this helps :)