https://www.coursehero.com/file/10834810/HBCNetscape/?justUnlocked=1#/question

Hi, I am looking the course hero document in the above link and it mentions having an important attached spreadsheet. I was wondering if I am just missing it or if it is not attached? I am having trouble understanding how this person was able to get the answer they did in figure 4, and was wondering if you could help me solve it.