Oh, also, caveat: the above is super duper simplified. It works within the constraints of rolling and rerolling a buttload of red Armada die, but don't try taking it to a stats class and expect it to be rigorously accurate. I'm an English Lit major who does cybersecurity for a living, I'm like the least qualified person in the room to explain this stuff...
Thanks. It is pretty clear and explain what I finally realized after a long time making juice with my mind.