Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
WEB

Esther 7:9

Then Harbonah, one of the eunuchs who were with the king, said, “Behold, the gallows fifty cubits high, which Haman has made for Mordecai, who spoke good for the king, is standing at Haman’s house.” The king said, “Hang him on it!”

Read in other translations