Remove empty spaces and period

Question

I cannot get this regex to work:

\"4.  182 ex\" (number, period, 2 blank spaces, 3 numbers, blank space, 2 characters\"

The regex syntax should

Answer 1

^([\d]+)\.[\s]+([\d]+)[\s]..

Tested with perl:

> echo "4. 182 ex" | perl -lne 'print $1,$2 if(/^([\d]+)\.[\s]+([\d]+)[\s]../)'
4182