TSK · Numbers 18:16

Everyone who crosses over to those who are numbered is to pay this: a half shekel according to the shekel of the sanctuary(a shekel weighs twenty gerahs). The half shekel is to be an offering to the LORD.

Every conversion value must be calculated by the standard of the sanctuary shekel; twenty gerahs to the shekel.

The shekel will be twenty gerahs. Sixty shekels will be a mina for you.