Numbers 18:16

You are to pay the redemption price for a month-old male according to your valuation: five shekels of silver, according to the sanctuary shekel, which is twenty gerahs.

Note 5 shekels is approximately 2 ounces or 57 grams of silver.

Note 20 gerahs is equivalent to one shekel (approximately 0.4 ounces or 11.4 grams).

And those that are to be redeemed from a month old shalt thou redeem, according to thine estimation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.

You shall redeem those who are to be redeemed of them from a month old, according to your estimation, for five shekels of money, according to the shekel of the sanctuary, which weighs twenty gerahs.

Note A shekel is about 10 grams or about 0.35 ounces.

Note A gerah is about 0.5 grams or about 7.7 grains.

And those that are to be redeemed of them from a month old shalt thou redeem, according to thine estimation, for the money of five shekels, after the shekel of the sanctuary (the same is twenty gerahs).