A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Dear respected Klaudia Seitz,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, check via go to File>Option>Advanced>uncheck "Automatically insert a decimal point" option. Then close the Excel file and reopen to check the outcomes.
Please understand that our initial reply may not always immediately resolve the issue. However, with your help and more detailed information, we can work together to find a solution.
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Waqas Muhammad