Use PEMDAS, aka parenthesis, exponents, multiplication/division, addition/subtraction from left to right in order.
Start with the parenthesis and do the addition within the parenthesis.
8/2(2+2) —> 8/2(4)
Since you can do either multiplication or division before the other, read the equation from left to right and do it in that order.
8/2=4(4)=16