An interesting link, couldn't remember the thread I went on about early math but them Babylonians (no, not dem Babylon), knew what they were doing.
https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study
https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study