Okay, I wasn't aware of this. I've played another game named Oddsparks Automation Adventure where the "conveyor belts" are individual units that carry items, an

Okay, I wasn't aware of this. I've played another game named Oddsparks Automation Adventure where the "conveyor belts" are individual units that carry items, and the throughput is calculated by how long the walking track is combined with how many units are on that track. I don't really have the will to do the math in my head either, specially since things may change frequently as you upgrade/add/remove things and a throughput at one place causes a cascading change throughout the production chain.