'Thirty' in the Bible

And in the eighteenth year of Nebuchadrezzar he took away as prisoners from Jerusalem eight hundred and thirty-two persons:

And in the thirty-seventh year after Jehoiachin, king of Judah, had been taken prisoner, in the twelfth month, on the twenty-fifth day of the month, Evil-merodach, king of Babylon, in the first year after he became king, took Jehoiachin, king of Judah, out of prison.