Verified Answer :

You need to use PEMDAS
So first you do the parenthesis.
81=8.
So now re-write the problem.
50+108+2
Now you are going to multiply.
10*=80
Now re-write the problem again. 
10+80+2
10+80=90+2=92
So the answer to this problem is 92.

CandC

You should use PEMDAS
(parenthesis, exponents, multiply, divide, add, and subtract)
you can remember it by using 
Please Excuse My Dear Aunt Sally

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