Answer:
About 250,000 - 300,000 people die per day.
Calculations:
7 billion people on earth.
Average life expectancy is about 66.12 years ~ 24150 days
7 billion people ÷ 24,150 days is just less than 300k
However, life expectancy is increasing, and population is increasing, so the actual number should be lower than 300k.