It's common to have a few lap infants in the plane, so you could have 76 passengers, 3 lap infants, 4 crew, 1 crazy jumpseater. We often fly with 80+ people on

It's common to have a few lap infants in the plane, so you could have 76 passengers, 3 lap infants, 4 crew, 1 crazy jumpseater. We often fly with 80+ people on board. Source: I am a E175 pilot.