Multiply the following as quick as you can in your head: 7,686,369,774,870 x 2,465,099,745,779 = ? If you took longer than 28 seconds, then you missed a world record held by Shakuntala Devi. Known as the human computer, today would have been her 84th birthday. Devi was a sari-clad diva of numbers, a math prodigy who calculated as fast & accurately as any hand-held contraption. She possessed a skill with figures that amazed computer wizards, intrigued academics and dumbfounds the rest of us.