Hello Patrick & Pavel,
I just wanted to say "Thanks a lot" for this great extension!
On my site I show prices with help of SMW. The problem was that prices like 27,10 € were shown as 27,1 € and not as 27,10 €. First I played around with {{padright:{{#ifeq:{{#len:foo}}|2|foo,|foo}}|5|0}}
(which worked), but then I found your extension which is much more convenient.
Just a hint for German users: If you have a number like 27,1 and want to convert it to 27,10 use the following code:
{{#number_format:your_number|2|,|.|,}}
Thanks again!