Let me get the Select tool. And then let me make sure I'm selecting all of the numbers. Let me copy it and then let me paste that. It's a little messy with those lines there, but I think this will suit our purposes. So when we're multiplying by this, we're essentially dividing by this expression up here. Now, this we can simplify pretty easily. We have a, well actually I forgot to do, this should be 9 factorial.