Google Analytics – Match URLs on Unique Number in Content Drilldown Using RegEx?

I am trying to track pageviews on Google Analytics for knowledge base articles (on Zendesk). Each article has a unique number. However, the title of the page is sometimes appended to the URL, and GA tracks this as a separate page. If the title of the article changes, it generates a new URL.

For example, these would all be the same article, so I want to see a single pageviews count, but GA would show as 3 separate stats

/hc/en-us/articles/360039413394 /hc/en-us/articles/360039413394-How-To-Make-A-Sandwich /hc/en-us/articles/360039413394-How-To-Make-A-Turkey-Sandwich 

I want GA to roll up the articles matching on the unique number, and ignoring everything after that. Is there a built-in way to do this? Is there a way to do this with Regex? Where would I add the Regex for the Content Drilldown page? Help!

Thank you.