Fix Italian parsing of 3 digits numbers

3 digits prefixed number may be composed by 6 or 7 digits after the prefix. Here's a clear example.

![screen_shot_2014-02-14_at_15_46_02-3](https://f.cloud.github.com/assets/5387/2171674/6a642c26-9587-11e3-876d-9b604713e401.png)