If your LLC makes income from non Puerto Rico sources (e commerce, drop shipping, etc), the most it pays in taxes is 4% on what it makes. If you as owner of the LLC live in Puerto Rico then you can pay yourself from your LLC and have zero taxes on what’s paid to you
The most precise calculation i found about this was the cluster uses 1024 Xeon E5410 CPU's. Each CPU should be theoretically capable of pulling ~20kh/s.1024 x 20 = 20,480 khash/sAt the difficulty this time he made 98k doge per day. Minus power cost a loss of 300 $.