Numbers 31:52

52. All the gold 16,750 shekels of gold are equal to nearly $123,000. Considering the greater purchasing power of gold in ancient times, this amount would be probably equal to nearly a million of dollars. This shows the greatness of the conquered foe. Estimating the 32,000 maidens to be one fifth of the population ruled by the five kings, the sum total would be 160,000. The military strength would be about 40,000 men. “The quantity of jewelry seized as booty is quite in harmony with the well known love of nomads, and even of barbarous tribes, for ornaments of this kind; and the peculiar liking of the Midianites for such things is confirmed by the account in Judges 8:26, according to which Gideon took as much as 1,700 shekels in weight of golden rings from the Midianites alone, besides ornaments of other kinds.” Keil and Delitzsch.