Calculate the difference between π/4 and the Leibniz series for computing $\pi /4$ with $n=200$.

This series appears to converge relatively slowly, and so at what point can we confidently say that "the $576$th digit is $3$" of an irrational number?

This series appears to converge relatively slowly, and so at what point can we confidently say that "the $576$th digit is $3$" of an irrational number?