We don't have a $40 trillion national debt. Where are you getting your supposed MBA? Sure doesn't seem like you're getting your moneys worth.
As of this year, the Federal government debt is: $8.2 trillion
House Hold Credit card and Auto loan debts are $2 trillion + but we'll just round to $2 trillion.
House Hold Mortgage debts are around $8 trillion
That's $18.2 trillion on Federal and House Hold debt.
The remainder is eaten up between corporate and state/municipality debt.