Bill Gates, Jeff Bezos, and Elon Musk are each worth more than 100 billion dollars.
How much is that?
Well, it will take the average worker 20 years to earn 1 million dollars.
There’s 1,000 millions in a billion, so it would take twenty thousand years for the average worker to earn 1 billion dollars.
To make 100 billion dollars, it would take the average worker two million years.
Here's what 100 billion dollars looks like. Each line is 10 million dollars.
(It will not show up well on your phone.)