How are you?

If somebody asks “How are you?”, What all ways we can reply, some very nice usages both formal and informal … ?

I’m super, thanks for asking
Better than I deserve

Formal: I am fine. Thank you so very much indeed, sir/ma’am. How do you do?
Informal: Alive.

I don’t think that many people still use the phrase ‘How do you do’ meaning ‘Pleased to meet you’. As a matter of fact, I don’t think that anyone says ‘how do you do’ in response to ‘how are you’.[YSaerTTEW443543]

TOEIC listening, talks: Bank executive briefs staff on business goals[YSaerTTEW443543]