Exodus 30:14

30:14 Everyone who crosses over to those numbered, from twenty years old and up, is to pay an offering to the Lord.

Exodus 38:25

38:25 The silver of those who were numbered of the community was one hundred talents and 1,775 shekels, ¹  according to the sanctuary shekel,

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¹ sn This would be a total of 301,775 shekels (about 140,828 oz), being a half shekel exacted per person from 605,550 male Israelites 20 years old or more (Num 1:46). The amount is estimated to be around 3.75 tons.