|  | 
			
			
			
					
					
			
				
					
						Supa -- it's easiest if you keep each row as a separate game, and don't try to keep a rolling total in each row.  Instead, put a row at the bottom that adds up all of your single-game totals.  (This is a pretty common way of tracking data in Excel).
 Example (column headers starting from A1):
 Buy-in, Rake, Gross $Won, Net $Won, ROI, Win?
 
 Values (actual data starts in A2):
 Buy-in, Rake, Gross $Won:  enter the actual values
 Net $Won:  =C2-B2-A2
 ROI: =D2/A2
 Win?  =IF(C2>0, 1, 0)
 
 Then, if you want a summary row, you can just auto-sum for most of the columns (except ROI -- you'd use the same formula in the other rows).  Auto-sum is the sigma button -- select the cell where you want the auto-sum to go, press the sigma button, then select the cells you want to add up and press enter.
 |