How can the US national debt be over $23 trillion if that much money doesn’t even exist in the world?

Question

How can the US national debt be over $23 trillion if that much money doesn’t even exist in the world?

In: Economics

Answer 1

Let’s say there is 100 dollars for total 10 people they wants to borrow 10 dollars with 10% of interest rate now after 1 year they have to bring 120 dollars back but there is only 100 dollars right, it’s just keep happening for over 100 years. Also mortgages you gonna borrow hundreds of thousands of dollars but you don’t have the exact amount.