What is the literal translation of this?
"Apa" = what
"kabar" = news information (about someone)
how = bagaimana. how are you? is used to asking about your being. So it can be ”bagaimana dengan (keadaan) kamu”. Correct me if I wrong
Yes, I'd like to know as well.
Why is it not "Berapa kamu" which literally means "How you?"
Berapa = how much (quantity), isn't it? Maybe you mean 'bagaimana'? Don't know if 'bagaimana kamu' would be correct though.