You're closer to being correct than my initial estimate. I was taking the average number of children born to a woman at 8. The population wasn't stable, it was

You're closer to being correct than my initial estimate. I was taking the average number of children born to a woman at 8. The population wasn't stable, it was growing. Mortality during childbirth either 1 or 2%. So somewhere in the 12-15% range that a woman would die of (one of her) childbirths. So, yeah seems about right. What is .85 in your calculation?