Aprofessorwasgivingabigtestonedaytohisstudents.Hehandedoutallofthetestsandwentbacktohisdesktowait.
Oncethetestwasoverthestudentsallhandedthetestsbackin.Theprofessornoticedthatoneofthestudentshadattacheda$100billtohistestwithanotesaying"Adollarperpoint."
Inthenextclasstheprofessorhandedthetestsbackout.Thisstudentgotbackhistestand$64change.