The national debt is a problem of which we are all subjected to. At birth it is said that we already owe money. Your task is to find a way to calculate how much does a child born in 2013 owes at the time of birth.
To calcukate this we have to look which is the national debt and the number of habitants
National debt is: 21,989
Habitants: 10 millions

 So as we wanna know how much 1 person owes at birth we have to divide it
21,989 divided by 10,000,000 is 9198.9

So a child owes 9,198.9.