That's kind of a recursive google search that should be self explanatory. It did took me some time to tweak the sentence and trying to find a number which would correspond precisely, reason why I changed it to "hundreds" instead! :P
If you have used google long enough you certainly have stumbled on situations similar to this, many times. Whenever it shows less than 10 pages it's quite easy to see it. The point is: the number of results on any page except the last one seems like a terrible estimate.
What's even weirder, some random times the estimate suddenly becomes much better and almost exactly the same on all pages than it is on the last page - the only page that's always correct.
So, anyone knows why?