Calculate Pi 3.1

Calculate Pi lets you calculate over one million decimal places of Pi on your own Mac! What an extremely geeky pleasure!
The advent of digital computers in the 20th century led to an increased rate of new ? calculation records. John von Neumann et al. used ENIAC to compute 2037 digits of ? in 1949, a calculation that took 70 hours. Additional thousands of decimal places were obtained in the following decades.