Numbers 4:34 CEV

[34] Moses, Aaron, and the other Israelite leaders obeyed the LORD and counted the Levi tribe by families and clans, to find out how many men there were between the ages of thirty and fifty who could work at the sacred tent. There were two thousand seven hundred fifty Kohathites, two thousand six hundred thirty Gershonites, and three thousand two hundred Merarites, making a total of eight thousand five hundred eighty. Then they were all assigned their duties.