I'm very well and you? (we would say - Je vais très bien)
et toi? as in "ca va bien, et toi?"
"bien, et toi ?" is the answer people make when they are asked "how do you do?" It means "fine, and you?"
I am good, how about you?
It means 'very well thank you, and you ?'. This is the standard reply when a friend asks 'Comment ca va ?' (how goes it?)
Very well, and you?
Je vais bien et toi ?
Je vais bien, et toi / et vous
"Je vais bien et pour toi ma fillete" means "I'm going fine, and what about you, my girl" in English.
e toi- means and you example: comment allez-vous? (how are you) bien merci, e toi? (good thanks, and you?)
Good = Bien Good, you? = Bien, tu ? Good, and you? = Bien, et toi ?
I'm fine and you?