Solutions by everydaycalculation.com
23 - 815 is 215.
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Related: 4/3-8/15 2/3-16/15 2/6-8/15 2/3-8/30 6/3-8/15 2/3-24/15 2/9-8/15 2/3-8/45 10/3-8/15 2/3-40/15 2/15-8/15 2/3-8/75 14/3-8/15 2/3-56/15 2/21-8/15
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