You remember back when your parents told you to study hard and learn good math skills that they would be valuable to you in the future? You don’t? Well, I bet they did. Now here is an instance when the math became very valuable in more ways than one. A NASA manual with James Lovell’s lifesaving Apollo 13 calculations brought almost $400,000.00 at auction. Not only did the math save lives and the mission, but it sold for a lot of money.