Alrighty, I am trying to find a formula for how much Mineral (roughly) and storage is required to make (X) amount of credits. so hypothetically, i want to produce 40B credits over 24 hrs. it might be important to mention that i normally collect only twice a day.

Collect 1 hour worth and multiply the amount of credits by 24?

i feel like more larger amounts of ( hrs) collected gives more then single hours, i dont thing it work 1hr *24

nope you are wrong on that assumption. If you want more accurate numbers than a single hourly pull, record the pull data for a week or longer and then divide it by the number of periods you are examining. That will give you a result closer to the true average.

This is the thread you are looking for: http://galaxylegion.com/forum/viewtopic.php?f=7&t=36227

Yep, like the thread Chloron linked to points out, the "formula" is very close to 1 Billion creds/day for each 1K MP/hour you have.
So you'll be needing very close to 40k MP/Hour

most likely a lot more than that if they can only pull twice a day 12 hours storage isn't really heard of.