How to display average rating for Product Comments Module ?

[Designinfo.in]

I want to display average rating next to the yellow stars of Product Comments Module in Default Prestashop Theme1.6.1.2

 

Example:  **** 4/5

 

Also, I want to display the average of all the rating in the small description.

Can I modify the default Product Comments module to get this.

 

I am doing this because google rich snippets are missing on my website and for some reason google is not displaying them in the search results. Probably after this modification, I can start highlighting in the google search console.

 

Website: https://designinfo.in