Why when ent. 9.25, 4; AVG.=6.1 ?

HP 9, win10;
What am I doing wrong?

@abi: Can you attach a file showing the strange result?

If your file is confidential: Copy the offending cells and the formula and paste into an empty sheet. Check that the error persists. Save and upload that.

To upload: Click the Edit link below your question, then use the paperclip tool to add an attachment.

So for me appears as a result 6,625

image description

With me Windows 10 Home; Version 1903; 64-Bit | LibreOffice, Version: 6.3.2.2 (x64).

How come a Calculator says: 2.325 ?