Can a cell contain a number, but display a cumulative sum?
Is there a way to just type a number into a cell, but have the cell display the running total of the numbers in the column? Here is an example of what I want to type versus what I want to see:
I know this can easily be done using pairs of columns, with the raw numbers in "helper" columns, and the SUM formula in the main columns (like in my example image), but I don't want to use so many extra columns.
I can use Microsoft Excel or LibreOffice Calc.