If you need to chain-calulate up to 3 variables,, this is for you. It lets you sum (chain addition), subtract, multiply, etc. multiple data sets and store intermediate results from each process for re-insertion back into the same or one of the other calculatrs, which is like multiple memories, by copy/paste. Ideal for Sum of Squares (SS) operations. To do n! just recursively multiply 1*2*3...*n. While each "memory" box will hold more than one row of labels and values, I would not use more than two unless I had a really good memory for this kind of thing. But with 5 of these per calculaotr, you have the ability to stor 10 lebelled values. Also, the copy/paste/calculate process can get a bit cranky so pay attention to the cursor, with practice it will work out. There is a practical limit of 16 digits
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