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.
Although all of the math problems on the ACT can be solved without a calculator (really, they can!), we still recommend that you bring one, just in case. Even the biggest math whiz kids need some help sometimes, and the speed and accuracy of a calculator can help you when you're running out of time.