Hello,
I have a very simple and effective solution for you. You just need a simple free software, Libre Office
or Open Office. There is a nice command, text to columns, that will transform all rows from 1 column into 2 columns, by a separator that you'll choose, in your case "&". Like that you'll have 1 col with left side and another one with right side.
I will show you exactly how you can do this .
Best Regards,
Constantin Plaiasu