Get grid data from Floating Footer

I'm using DBAdvGrid (latest version) and have switched on the floating footer. In some columns I have acSum and the results are ok and displayed. Now I need the result of one of the columns to work with it in further calculations but I don't see how to get the data out of that cell in the floating footer. Maybe it's easy but at the moment I don't see it...can somebody tell me how to do it?


You can get this with