Non-obvious operations in a spreadsheet like LibreOffice Calc:

1. Reverse the order of e.g., column A, between rows 1 and 614. Paste into B1:
=INDEX(A1:A614,SEQUENCE(ROWS(A1:A614),,ROWS(A1:A614),-1))
... and it will populate the whole column B until row 614.

2. Cumulative sum of column A to be written in column B, paste this into B1:
=SUM(A$1:A1)
... then extend that formula to the last row.

But that does too much work (sums the column up to the row for every cumulative sum). Another option is:
* at B1, type: =A1
* at B2, type: =B1 + A2
* extend B2 to the end.

#LibreOffice #LibreOfficeCalc #spreadsheets