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File:HP-22S Scientific calculator, front, power off, against blue background (35581353796).jpg
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File:HP-22S Scientific calculator, front, power off, against blue background (35581353796).jpg
flickr.com/photos/50019407@N03/
35581353796
/ operator: Flickr URL: https://live.staticflickr.com/4254/
35581353796
_c3e7e4b71a_o.
jpg
heading: 173.15108 degree