how to Changes English numerals to Arabic numerals?

When I used LibreOffice to open an English pdf file, It turn Numbers to Arabic numerals . How to fix it? And how to prevent it in the future? Thanks.

What is “English” numerals, and what is “Arabic” numerals? AFAIK English uses Arabic numerals.

Do you use LO to view the PDF or to edit it?

To view PDF, use a PDF viewer, there are good ones, whatever your OS. Foxit reader, PDF X-Change…

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