Make the computations that the problem asks for. When the problem asks you to adjust the net income for the Tax
Cuts and Jobs Act of 2017, the problem is asking you to use net income for 2017 like this:
2017 Net Income $1,380.6
Adjustment < 175.2>
2017 Adjusted Net Income $1,205.4
And start your computation of EBI for 2017 with the $1,205.4 figure.