I cannot seem to comprehend the method the game uses to define how many cargo units a given flight can fulfill.

I read on another thread that the game uses blocks of 100kg for 1 cargo unit, but that doesn’t add up when I calculate things. So I decided to try and figure it out myself by resetting a test airline a few times to see how many cargo units each a plane would get for a flight (SIN - ANC). Results are:

Plane | Cargo units | Calculated payload (performance eval. check tool)

777-200F | 833 | 91099 kg

767-300F | 391 | 42855 kg

767-300F (winglets) | 421 | 45957 kg

A330-200F Range | 484 | 51922 kg

A330-200F Payload | 460 | 49366 kg

If you do the math, you can also notice that it doesn’t work out to a standard value. It ranges between 107-109 kg per cargo unit.

Would anyone know exactly how the game calculates the amount of cargo units a plane can take on a flight?