Regents Avail. Supplied In Stock Used Total
Acetone 0 0 0
Alcohol 70% (Isopropyl) 21 21 21
Alcohol 95% 4 4 4
Alcohol Prep Wipes 3 3 3
Bandages 6 6 6
Basic Trays 48 48 48
BD Microtainer Lancets 30 30 30
Biohazard Bags (Orange) 1 1 1

Here is my is my problem, I was able to create cumulative total using the formula that was given by smitty on 10/02/04. It worked for only one cell and only one row. In my case, I have 2 cells in a row that need a cumulative total and I also have 150 rows that need different cumulative total in columns J (Quant. In Stock), and L (Total available). Theses totals will depend on quant. Supplied (G) and Quant used (K). Both G and K could be any number.
Here is the formula that was used as given by Smitty:

You need a bit of VBA for that:

Private Sub Worksheet_Change(ByVal Target As Range)
Dim rng As Range
' Only look at single cell changes
If Target.Count > 1 Then Exit Sub
Set rng = Range("A2")
' Only look at that range
If Intersect(Target, rng) Is Nothing Then Exit Sub
' Add A2's value to B2
[B2] = [B2] + [A2]
End Sub

Right click the worksheet tab and select View Code. Paste the code into the module window that opens, then ALT+Q to exit back to Excel.