I believe the answer is 175. The reason for this is because...
1. Anything is parentheses is done first. So, (28 divided by 7=4)
2. After parentheses, you have Exponents. 4 to the second power is 16. 4X4=16
3. Next is mulitply or dividing. Multiply 4X16 since they are touching. 4X16=64
4. Lastly you have adding and subtraction. Add 64+111. 64+111=175! Remember PEMDAS(Parentheses, Exponent, Multiplying, Dividing, Adding, Subtraction)
I hope this helped (My last answer was deleted for not having info on how to do the equation)