My website was hacked a while back and google managed to index millions of pages with hacked content.
I have requested the removal of pages that Google indexed and still waiting for removal. However, I have a few million pages that google crawled and yet to index. 99% of those are in need of removal and I don't know how to.
Is there anything can be done about this?
p.p.s the only thing that sprint to my mind is changing 404 to 410, but I have no idea on how long it may take to get rid of those millions of crawled pages.
p.s. most of those pages have randomised page names such as