Solutions by everydaycalculation.com
1st number: 1 3/15, 2nd number: 1/9
1815 - 19 is 4945.
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Related: 36/15-1/9 18/15-2/9 18/30-1/9 18/15-1/18 54/15-1/9 18/15-3/9 18/45-1/9 18/15-1/27 90/15-1/9 18/15-5/9 18/75-1/9 18/15-1/45 18/15-7/9 18/15-1/63
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