If consumers save more than before, what do banks usually do with the money that they now have available?

The Jews who run the banks practice usury in order to obtain and horde inhumane amounts of money, so it doesn't matter what they do with any money they make. At this point, they can use it for political donations, lobbying, sex trafficking, funding the Israelis, etc. The funny thing is that usury is condemned by the Torah they claim is theirs, but they practice usury as commanded by their Talmud, upon the very nations that the Old Testament truthfully belongs to.