The national debt is $40 trillion. What does that mean mathematically?

An investigation into the incomprehensibly, unfathomably large amount of money the U.S. owes

The national debt hit yet another record on Wednesday, and political leaders mostly yawned. It wasn’t always this way. Deficits and debt were among the driving issues of the 1992 presidential campaign, nearly upending national politics. Paul Tsongas, the former liberal senator from Massachusetts, ran for the Democratic

Heavy borrowing, increased spending and tax cuts by Democratic and Republican administrations have long raised concern.