1.33 (or 133 in-game) is the default value for the USA coefficient. If you for some reason have it set to something else, adjust it accordingly in the calculator. The same with the multiplier, which is default 1 (100 in-game). It's important to note that these two values are shared between scopes and aims, so they must be the same for all calculations.
Using the default values works fine, since you are calculating the zoom sensitivity for each scope.