Numbers 3:47

The LORD spoke to Moses, saying,

“Take the Levites instead of all the firstborn among the children of Israel, and the livestock of the Levites instead of their livestock; and the Levites shall be mine. I am the LORD.

For the redemption of the two hundred seventy-three of the firstborn of the children of Israel who exceed the number of the Levites,

and you shall give the money, with which their remainder is redeemed, to Aaron and to his sons.”

Moses took the redemption money from those who exceeded the number of those who were redeemed by the Levites;

from the firstborn of the children of Israel he took the money, one thousand three hundred sixty-five shekels, according to the shekel of the sanctuary;