'Thirty second' in the Bible

Now from the time when I was made ruler of the people in the land of Judah, from the twentieth year till the thirty-second year of Artaxerxes the king, for twelve years, I and my servants have never taken the food which was the right of the ruler.

But all this time I was not at Jerusalem: for in the thirty-second year of Artaxerxes, king of Babylon, I went to the king; and after some days, I got the king to let me go,