csail/6006psets_ng — comment on commit 567e292441d2a5cf99f7e43da25f0907762876fa
File: 5/code/rsa/big_num.rb line 269
By pwnall:

After reading the method, I think it'd make sense to add the comment on how the approximation is computed above this line.

```ruby
# First approximation: the inverse of the first digit in the divisor + 1,
# because 1 / 2xx is <= 1/200 and > 1/300.
```