Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
elementary OS Stack Exchange is a question and answer site for developers and users of elementary OS and applications. It only takes a minute to sign up.
Is it possible? Language packs are installed.
No, there is no possibility to do this because this is not something implemented in the source of pantheon-calculator.
You can always file a feature request or even a bounty, but it might not meet the goals of the developers who want to keep things simple.
Required, but never shown