I have never assumed anything other than that it would be humans, presumably mostly volunteers from the various political parties, doing the counting. That is h

I have never assumed anything other than that it would be humans, presumably mostly volunteers from the various political parties, doing the counting. That is how it is done in Sweden, and I think also a bunch of other European countries. It worked fine for us before we have computers and it still works. We get a preliminary result within a few hours, and a final result in like 3 or 4 days. And the problem of manually counting votes scales linearly with the population so the size of the country should not matter much.