Write calculated column back to database automatically

Hi there,

I want to simply write back calculated columns to the database. I understand I need to use PowerApps, but it looks like manual intervantion is needed with PowerApps (i.e. a user must click sumbit).

Does anyone have an idea on how to automatically write back calculated columns to the database on a schedule (this seems like a very simple task)

(PS: I have searched for similar posts, but they all refer to generic PowerApps blogs/ posts, but require a user to submit a form).

Thanks in advance