Query about replacing "(\d)+" in units for Regex Match AutoSuggest Provider

Hello.

I want to use the plugin to replace:

32" x 18" x 9"

to

32 x 18 x 9 pul.

In the find section, I'm using either:

(\d)+(\") x (\d)+(\") x (\d)+(\")

or

([0-9]){1,3}(\") x ([0-9]){1,3}(\") x ([0-9]){1,3}(\")

 

What string can I use to replace each number. What I was using only replaces the first digit:

$1 x $3 x $5 pulg.
 
Thanks