Solutions by everydaycalculation.com
1st number: 1 8/10, 2nd number: 5/30
1810 - 530 is 4930.
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Related: 36/10-5/30 18/10-10/30 18/20-5/30 18/10-5/60 54/10-5/30 18/10-15/30 18/30-5/30 18/10-5/90 90/10-5/30 18/10-25/30 18/50-5/30 18/10-35/30 18/70-5/30
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