add a span element with a class around the main pr

-- url of the page with the problem -- : www.kaakvlaggen.nl/webshop/product/6347-...-3-meter-lengte.html
-- HikaShop version -- : 2.6.3
-- Joomla version -- : 3.5.1
-- Browser(s) name and version -- : all
-- Error-message(debug-mod must be tuned on) -- : span

We try to add a span element with a class around the main price on a product page. We already add a span element with a class around the Without_BTW price. in the language overrides.

How to do this?

This is the page:

www.kaakvlaggen.nl/webshop/product/6347-...-3-meter-lengte.html

We want these prices straight under each other in that way that the vertical strips '|' are in one line!

138,06
105,75
94,08

Jan