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Use a smart phone, or a Fitbit or similar, or just walk for an hour and count your paces (should be about 8000) then you know a quarter hour will be 2000 or so.
I have a pedometer that I use on walks and know one walk measures exactly a mile (approx 2225 steps for me) .
I know I walk approx 5500 steps in the winter on 2 walks (and over twice as many in the summer ) and additional steps walking around the house and garden .