As I was going to St. Ives I met a man with seven wives. Each wife had 7 sacks, each sack had 7 cats, each cat had 7 kits. Kits, cats, sacks, wives; how many were going to St. Ives?
This is a stupid riddle, because maybe they were walking in the same direction. I'd expect the guy with all the wives and cats to be making slower progress, you know?
Well, the answer is "at least 1". We don't know the destination of the polygamist or whether there were other travellers with less remarkable entourages.
St. Ives is a popular tourist destination, but stupidly remote and takes a long time to reach. It's likely that there are several people travelling to St. Ives at any given moment.