Acts 18:11

And he continued there a year and six months, teaching the word of God among them.

He lived there a year and six months, teaching the word of God among them.

And he dwelt `there' a year and six months, teaching the word of God among them.

and he continued a year and six months, teaching among them the word of God.

So Paul stayed for a year and a half, teaching the word of God among the Corinthians.