Parallel
Acts 18:11
Nestle 1904 Greek New Testament · Berean Standard Bible
Ἐκάθισεν δὲ ἐνιαυτὸν καὶ μῆνας ἓξ διδάσκων ἐν αὐτοῖς τὸν λόγον τοῦ Θεοῦ
So Paul stayed for a year and a half, teaching the word of God among the Corinthians.