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do it on a calculator

Math was dull and boring for me until I read all I could about the people who advanced math from prehistory foward .  That is what makes mathmatics live. When I was a child, one of the most important jobs in the US was as a Calculator. The work employed thousands of people calculating working on paper to define mathematic terms and tables for Cos Sin Tan and many other terms requiring time and skill to solve on paper. The math required to launch the first objects into space was done using human calculators and their most valued tool of the trade was a slide ruler. Computers we have today can do a lot of math and it is not always accurate enough for me.