After reduction of about 10^6 sites, there remain around 1.5 x 10^6 sites with a total of 60 x 10^9 pages. (He didn't mean "billion" in the European or 10^12 sense did he?)
Food for thought there. In the US, your dog has a www site. In China, well under 1% of the population does (do they need permission or just money?) ... but those sites average 40,000 pages each for a total of several www pages per person.