Description: Ever wonder what your part of the national debt is? It might surprise you. What isn't surprising is that you can use scientific notation and division to figure out the answer. Created by Sal Khan and Monterey Institute for Technology and Education. On February 2, 2010 the U.S. Treasury estimated the national debt at 1.2278 times 10 to the 13th power. And then they say, using these estimates calculate the per-person share of the national debt. So essentially, we want to take the entire debt and divide by the number of people.*Teacher Advisor is 100% free.