In Jewish law, it is customary to give the equivalent of a chicken for each person in the household. A pregnant woman makes a donation for her fetus as well.
In practice, there are different customs, from those who give $18 per person (HAI in gematria), and those who give 10 times HAI, a sum of $180
It is right for every person to act according to their family’s tradition, and anyone giving charity is rewarded from above.