Solutions by everydaycalculation.com
23 - 47 is 221.
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Related: 4/3-4/7 2/3-8/7 2/6-4/7 2/3-4/14 6/3-4/7 2/3-12/7 2/9-4/7 2/3-4/21 10/3-4/7 2/3-20/7 2/15-4/7 2/3-4/35 14/3-4/7 2/3-28/7 2/21-4/7 2/3-4/49
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