Katherine Coleman, https://en.wikipedia.org/wiki/Katherine_Johnson, is a math goddess (not her official title) who "early application of digital electronic computers at NASA. Known for accuracy in computerized celestial navigation, she calculated the trajectory for Project Mercury and the 1969 Apollo 11 flight to the Moon." (Wikipedia 2016) Yes she calculated, by hand, how to get us to the moon. In fact NASA used her to calculated the accuracy.
Please lets Take back math, lets make it as important as all other subjects and refuse to settle for students grabbing calculators for 5 times 3. We can do better, really we can. Take back math www.takebackmath.com