Solutions by everydaycalculation.com
23 - 27 is 821.
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Related: 4/3-2/7 2/3-4/7 2/6-2/7 2/3-2/14 6/3-2/7 2/3-6/7 2/9-2/7 2/3-2/21 10/3-2/7 2/3-10/7 2/15-2/7 2/3-2/35 14/3-2/7 2/3-14/7 2/21-2/7 2/3-2/49
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