Well, yeah - it just doesn't have the power of natural selection for evolution is the point Dawkins is making.
But I don't think you can actually do the math for monkeys, if we want to get really pedantic. The problem is that monkeys are non-random typers, and I don't think their typing style is sufficiently characterized to do that math.
They tend to hit nearby clusters of keys on a QWERTY keyboard, for example.
Also, they'll poop on the keyboards, mucking them up.
At this point, Shakespeare probably becomes impossible, although the complete "Mission Earth" series by L. Ron Hubbard is still easily in reach.
Edited by Zhimbo, : No reason given.