How many die per day?

More than 150,000 worldwide each day.

Around 1,000,000 people die a day from different causes, such as drugs, poverty, murder, suicide and cancer and other related sickness.
Take 6,000,000,000 people live on earth today,

The average life span of a person is 75 years,

Answer, Divide 6,000,000,000 by 27393.75 will give you an answer of 219,028 people per day.

That is, there are 219,028 people born today, 219,028 that are 1 day old, 219,028 that are 2 days old... all the way up to 219,028 that are a full 27,393.75(75 years old) days old.

In this answer, every person on earth lives until they are 75 years old - Average of 75 years.