See also: Orders of magnitude, orders of magnitude (length)
External link Conversion Calculator for Units of LENGTH (http://www.ex.ac.uk/cimt/dictunit/ccleng.htm)
... with them, 74.5% are married couples living together, 8.3% have a female householder with no husband present, and 13.1% are non-families. 11.0% of all households are made ...