How do #19 and #20 absorptions work?

[ahill1]

Do these androids absorptions abilities work through addition? That's, when Gero or the fatty android grab someone and suck their power, do these droids increase their power through addition?

 

[Captain Cadaver]

I don't see why it wouldn't be anything but additive. Unless there's some kind of complex formula to the whole mechanic, there's no other way Gero would be able to make any kind of solid analysis when it came to absorbing people's Ki.

 

[Let's Go Fearless!]

Their power wasn't said to be multiplying when they absorbed someone so only addition makes sense.