“The caller read out the numbers at a speed evoking an auctioneer on fast-forward, each multidigit figure blurring into the next. Within seconds, Daiki Kamino’s right arm shot up in the air, triumphant. Not only had he heard every number, he had tabulated them and arrived at the correct, 16-digit sum: 8,186,699,633,530,061.” The NYT: He did it all on an abacus. “Showing the discipline of elite athletes, more than 800 contestants from across Japan, and a few from South Korea, gathered in an auditorium in Kyoto earlier this month to put their skills to the test.” (We should get these guys to track the deficit.)