Value templates within scrape - convert "14,5 km/h" to "14.5"

I#m just struggling with value templates within Scrape. Im using scrape web configuration and parsed string from website is “14,5 km/h”. Just looking for converting to “14.5”.

Didn’t find good documentation how to perform that…

try this out in devtools > templates

{{ "14,5 km/h"[0:4]|replace(",",".") }}
{{ "14,5 km/h".split(" ")[0]|replace(",",".") }}