I have never bothered to count them, but we have quite a big house and I am always walking around that, then there is going up and down the garden, doing gardening, which accounts for part of daily exercise of itself, ditto my pilates class. Plus the daily walk (without a dog), 2 - 3 miles
Last year DD and I went up to London from her house. We walked to and from the station, 2 miles in total, got a train, then a tube, walked to a museum, went to the exhibition we wanted to see, we did not go round the whole museum, back to the tube, to another exhibition, round Hayes Wharf, supper and back home by tube and train. We were amazed to discover that the app on DD's phone showed we had walked over 11 miles that day.
I think many of us in our daily pottering around take many more steps than we realise so probably do do our 10,000 steps a day.