It is recommended to use Turbo mode as it calculates Pi a lot faster. All of the series used: Gregory-Leibniz series The Gregory-Leibniz series is a set of calculations that was created by Gottfried Leibniz. It is a series that uses division, subtraction and addition to create an approximation of Pi. This algorithm is basically (4/1)-(4/3)+(4/5)-(4/7)+(4/9)... Nilakantha series. The Nilakantha series is a set of calculations that was created by Nilakantha Somayaji, Gottfried Leibniz and James Gregory. It is a series that uses division, multiplication, subtraction and addition to create an approximation of Pi. This algorithm is basically 3+2/(2*3*4)-2/(4*5*6)+2/(6*7*8)...
