For anyone who has struggled with creating fractions, you must try Proper Fraction Pro. This is the second script I've bought from Dan Rodney (the other was for making book jackets) and clearly he understands not only the problems users face when working with fractions, but the best solutions. Although the cost may seem steep ($75), for InDesign there's nothing like this on the market. Moreover, if you use lots of fractions as I do, you'll soon forget the price and revel in the result. BTW, Dan also has a free version of this script without all the advanced features that's worth downloading for casual fraction users.