They must be 40 next door neighbours, even if he takes as little as 5 mins going from one customer to the next thats over three hours there, so he would have to do each house asuming he was working ten hours in about 10 mins. so in all 15 mins per customer, 4 per hour, 40 per day. With no breaks.
Not me, I had about 15 in today, but only got about half of them done because of the weather.
Gerard