"Google's magic calculator" was probably just a wrapper to GNU Units [0], which produces:
$ units You have: (1073741823/(600/inch))**2 / A4paper You want: Definition: 3.312752e+10
0: https://news.ycombinator.com/item?id=36994418
It couldn't have been a wrapper - it understood a tiny tiny fraction of the things that Gnu units does.
It couldn't have been a wrapper - it understood a tiny tiny fraction of the things that Gnu units does.