How do production bonuses actually work?

[Kouvb593kdnuewnd]

How do the production bonuses from cards and governments interact with each other? Like if you have 10% from amenties and +50% from card, would it be 60% or 1.1*1.5? Also do fascism production bonus apply to all units, even civilian units?

 

[criZp]

they are additive, not multiplicative