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by TheChetan 3321 days ago
In 2012 Facebook had 1BN users and 180K servers. 1,000,000 users / 180,000 servers = 5,556 users per server In 2017 Facebook has close to 2BN users. 2,000,000 users / 5556 users per server = 360,000 servers

Notice how the 1B has only 6 zeros. The awesome part is that this mistake evens itself out later, yielding a correct number for "The of servers".