Solutions by everydaycalculation.com
1st number: 1 6/12, 2nd number: 3/12
1812 - 312 is 54.
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Related: 36/12-3/12 18/12-6/12 18/24-3/12 18/12-3/24 54/12-3/12 18/12-9/12 18/36-3/12 18/12-3/36 90/12-3/12 18/12-15/12 18/60-3/12 18/12-3/60 18/12-21/12 18/84-3/12 18/12-3/84
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