Numbers 3:45

42 and Moses numbered, as Yahweh commanded him, all the first- born among the children of Israel.

43 All the firstborn males according to the number of names, from a month old and upward, of those who were numbered of them, were twenty-two thousand two hundred seventy-three.

44 Yahweh spoke to Moses, saying,

45 Take the Levites instead of all the firstborn among the children of Israel, and the cattle of the Levites instead of their cattle; and the Levites shall be mine: I am Yahweh.

46 For the redemption of the two hundred seventy-three of the firstborn of the children of Israel, that are over and above [the number of] the Levites,

47 you shall take five shekels apiece by the poll; after the shekel of the sanctuary shall you take them (the shekel is twenty gerahs):

48 and you shall give the money, with which the odd number of them is redeemed, to Aaron and to his sons.