the national debt is approximately 10^13 dollars. If the debt could be reduced by 10^10 dollars per year, about how many years would it take to eliminate the entire debt
$${\frac{\left({{\mathtt{10}}}^{{\mathtt{13}}}\right)}{\left({{\mathtt{10}}}^{{\mathtt{10}}}\right)}} = {\mathtt{1\,000}}$$
1000 years
4 years 33 days
