You must remember the order of operations, which is Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
First we do the exponent.
6^2 = 36
36 + 14/7 / 5 + 9 - 3
Then we divide 14/2 by 5, which is 0.40
36 + 0.40 + 9 - 3
Now add
45.4 - 3
Finally subtract.
42.4 is the answer.