Thats not going to work. I mean you can try it but windows does not like that many threads running even on a machine. 2000 threads and windows starts to choke, generally speaking.
Second, it doesnt like that many threads per instance. Across multiple different SEO tools Ive tried and 100 to 200 is ideal. Now I do use more then that, on GSA SER I use about 350.
The most I have used on a dedicated server with website contact is 750 and website contact goes thru phases where its unavailble. This isn't website contacts fault, windows just can't paint the gui due to too much going on.
Mostly I run about 300 threads posting, and 300 to 500 on identification, although on slower servers and vps I do like 100 on identification.
To run 3000 connections posting you would need 300 private proxies anyway, which is heavy, I mean I have more then 500 but its just doesn't make sense, its more effecient to spread them out across smaller machines.
Google does the same, lots of small machines not a few big ones.
My 2 cents.
I mean excel can do it with not too much, I figured out something like this at one point, its not beginner level though. But someone on fiverr could write a regex to do that really fast. Or upwork. Your just starting at the right side and working backwards looking for a -
thats how I would make the excel formula, but I don't remember off hand. I just have my python developer write stuff like this its quick, inexpensive and it works like a charm.
Cool, glad I can be of a help. I was really annoyed as I was trying a new host and they just flat said it was all my fault and banned my domain and blew me off. So I thought of filing an abuse complaint with the other host, which I have done before. However I arrived at felling good diverting my energy into helping others instead. So now Ill just put the energy there and keep moving.
Glad its beneficial to others.