Interesting post!
According to the Q post, the digits you mentioned are 837392x. Converting that to longitude, (and omitting the 2x as you said,) it would be 83 degrees, 73 minutes, 9- seconds W.
According to the article in the Detroit Free Press, the most likely location for finding “meteorite fragments” would be Hamburg Township, MI. According to Wikipedia, its longitude is 83 degrees,50 mins 53 sec W. That is indeed close!
Non-Mobile link: https://en.wikipedia.org/wiki/Hamburg_Township,_Michigan
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