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Here it says 32,000 chariots. In Shmuel II, 10:7 it says 20,000 foot soldiers from Aram Tzovah and 12,000 men from Ish Tov!
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Malbim: First he hired foot soldiers. Later, he sent 1,000 Kikar Kesef (verse 6) and hired the same number of chariots.
