 So in the last video we talked about this idea of cell referencing, being able to make cells kind of point to other cells. We can do that even further. We can actually expand that idea so that we're now referencing cells from different worksheets. Say for example, I've started to build up that summary sheet from the textbook. Notice how instead of just referencing a given month like I did in quarter one, January, February, March, I'm referencing quarter one. I'm looking for the total of paper for quarter one. Well luckily inside of here I have that same kind of concept. I'm going to go ahead and set up all of these so that I have my totals signed up. And now I've got that total, total. There we are. So we have it across every single one of them. Now I want that 1311 to appear on summary. Now I could type it in but what happens when it changes? What I can do is by using the equal sign that establishes once again I'm going to be doing a cell reference or formula. All I have to do is come over to quarter and highlight it. Notice what's appearing up here on my address bar. Apostrophe quarter one, apostrophe exclamation mark E6. It's going to actually look first at its quarter and then when I hit enter does exactly that. If I come over to say quarter two and do the exact same thing for quarter two. Quarter two E6. Quarter three E6. Well probably need to hit the equal sign. Quarter four E6. Now the same kind of process that I've done in the past. Guess what? I can actually apply that again. I can click, hold and drag all four of them. E7, E8, E9, E10. Now I do need to reapply my bottom border but okay that wasn't that terribly necessary. Boom and boom. Beautiful. So all of a sudden I'm able to see all of my different sections. Let me just remove those decimal places for a second. And I'm able to make a reference simply off of any one of my worksheets to another worksheet.