Assuming that the world population stabilizes at 10 billion and a life expectancy of 80 years, it can be estimated that the remaining 1140 billion humans will be born in 9120 years.
再假设世界人口稳定在100亿，同时假定人类的预期寿命为80岁，则可以估算出在9120年内将会出生11400亿。