There are 27 million enslaved people in the world today.
U.S. Cellular Field can hold 40,615 people. 27 million people would fill it 664 times.
Naperville, one of the largest cities in Illinois, has a population of 142,773. 27 million people would be about 189 Napervilles.
University of Illinois at Urbana-Champaign is one of the largest colleges in Illinois and graduates an average of 6,419 students per year. It would take 4,207 years for this school to graduate 27 million students.
Willis Tower is one of the tallest buildings in Illinois (110 floors). A stack of 27 million pennies would be as tall as 94 Willis Towers.
27 million people holding hands would stretch around the world once with many people left over.
Comparing to data near Naperville, Illinois. (click to change)