Solutions by everydaycalculation.com
23 - 312 is 512.
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Related: 4/3-3/12 2/3-6/12 2/6-3/12 2/3-3/24 6/3-3/12 2/3-9/12 2/9-3/12 2/3-3/36 10/3-3/12 2/3-15/12 2/15-3/12 2/3-3/60 14/3-3/12 2/3-21/12 2/21-3/12 2/3-3/84
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