Solutions by everydaycalculation.com
1st number: 1 3/15, 2nd number: 10/15
1815 - 1015 is 815.
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Related: 36/15-10/15 18/15-20/15 18/30-10/15 18/15-10/30 54/15-10/15 18/15-30/15 18/45-10/15 18/15-10/45 90/15-10/15 18/15-50/15 18/75-10/15 18/15-10/75 18/15-70/15
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