M000000112

$$\pi=732\arctan\left(\frac{1}{239}\right)-48\arctan\left(\frac{1}{682}\right)+176\arctan\left(\frac{1}{1240}\right)+96\arctan\left(\frac{1}{12943}\right)-176\arctan\left(\frac{1}{2485057}\right)-352\arctan\left(\frac{1}{6826318}\right)$$