The richest man of all time, when wealth is measured as a percentage of the national economy, was John D. Rockefeller, whose fortunes made Gates' and Buffet's look downright puny. Keeping score of who's wealthier is like a spectator sport with Forbes magazine as its official referee.
OH NO, I am not allowed a calculator on the MCAT!!! If you reading this you have probably completed all the general requirements to take the MCAT. Thinking back over your semesters of chemistry you would of used your calculator a lot to complete the math problems ranging from the basics of stoichiometry to the complex problems of solving the pH of a weak acid.
Note: when you fill out an application online there is a series of questions that you answer along with a math test. I did use a calculator for the math test and told my interviewer this as I am bad at math. This was not a deal breaker as they rarely ask you to manually do something in your head.