This link has served me well:

https://forums.galciv2.com/152796

My problem is it doesn't work "perfectly."

For example, I have a planet with a moon and 56 mp total from factories and my initial colony.  The production capacity slider is set to 100% and the social rate slider is set to 100%.  My race has a cilization social production bonus of 65%.

My understanding of the math from Iztok is that I should get a 75% bonus to my 56mp for a total of 98mp.  But instead it displays 97mp.

Where am I off?  It's driving me mad!

Thanks in advance for your time!