KJV:
And he brought out the people that were in it, and cut them with saws, and with harrows of iron, and with axes. Even so dealt David with all the cities of the children of Ammon. And David and all the people returned to Jerusalem.
NASB:
He brought out the people who were in it, and cut them with saws and with sharp instruments and with axes. And thus David did to all the cities of the sons of Ammon. Then David and all the people returned to Jerusalem.