maybe use less digits so it doesn't extend past margin. 50 is a nice number since it ends in 51, the number of things printed (50 digits plus decimal point) :-)

```
but you can request an arbitrary precision. For example, here we evaluate the first 50 digits of `\pi`:

    >>> pi.evalf(50)
    3.1415926535897932384626433832795028841971693993751
```