XF 2.2 Sum up view counter for sub forums


Active member
I have forum with no posts but with 20+ subforums with plenty posts in it, the view counter stays at 0 while the post counter is at 1k+, which seems inconsistent.
How can I add a sgl request which sums up the views of all sub forums and HTML/js which puts(replaces) the number in right place?

I asked the theme Designer but they said it is not designed by core.
I am willing to pay 15$ via PayPal if you put the code here available in public 20$, just post your PayPal here or via PM.
And everyone feel free to add more $ for higher bid when you have also a use for it!