To start off you do what’s in parentheses
2/5 + 5 = 5 2/5 or 5.4 as a decimal
Then the exponent 6^2 which is 36
So far you have 36 (5.4) - 3
Now you multiply 36 by 5.4 which is 194.4
So now you have 194.4 - 3 which equals 191.4 which is you answer.
Hope this helped!