Thematic Bible: Of the firstborn

And for the redeeming of the two hundred and seventy three which are more than the Levites in the firstborn of the children of Israel, take five sicles of every piece, after the sicles of the holy place; twenty geras; the sicles. And give the money, wherewith the odd number of them is redeemed, unto Aaron and his sons." read more.
And Moses took the redemption money of the overplus that were more than the Levites, among the firstborn of the children of Israel: and it came to a thousand three hundred and sixty five sicles, of the holy sicle. And he gave that redemption money unto Aaron and his sons at the word of the LORD, even as the LORD commanded Moses.

All that breaketh the matrix of all flesh that men bring unto the LORD, both of man and beast, shall be thine. Neverthelater, the firstborn of man shall be redeemed, and the firstborn of unclean beasts shall be redeemed. And their redemptions shall be at a month old, valued at five sicles of silver, of the holy sicle." A sicle maketh twenty Geras.