This system worked very well in carrying out the simple business and trade calculations of everyday life, and it was very usable in scientific studies, particularly in astronomy and algebra. The base 60 system is also called a sexagesimal system, and often there has been much speculation among modern scholars as to why the Babylonians chose it. It seems clear that man's ten fingers led to systems based on grouping by tens, but why a system of grouping by sixties?