regex - The correct regular expression to find a partial string -

I have a document where at times this type of text structure is visible:

  / * 6 * / some text / * 123 * / some text / * 12 * /  

I want to search all the events in the structure / * ??? * / is using regular expressions.

So far by me / \ * ?? , but it does not match the full text.

  / \ * \ s + \ d + \ s + \ * /