Hey!
What this question wants you to do is use PEDMAS, that is the order of operations, to get the answer.
P - Parentheses
E - Exponents
D - Division
M - Multipliation
A - Addition
S - Subtraction
So using PEDMAS, solve this problem by doing the operations first that come first, so you might want to start by solving 16 divided 2. (Division comes before multipliciation)