How many people die in Australia each year?
The life expectancy in Australia is about 80 years, and the population is 25 million. So each year the number of people that die would be about 25 million divided by 80, which is about 300,000.
The actual number of people that died in 2018 is 160,000. This is about half my estimate; what am I doing wrong?
One factor is life expectancy is at birth, the longer people live the longer they will be expected to live.