If BackPacker's answer is what you needed, let me re-phrase it: if you need extra intermediate variables, the only way is to have an extra column for them. Mind you these "intermediate variables" columns would be confusing the presentation, BUT they can be hidden from view (select column(s) , right click, "hide" ).
In my own, only columns A-H-K-L-M-U-V-W-X show, all others are hidden.