Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 5 5/8
1820 - 458 is -18940.
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Related: 36/20-45/8 18/20-90/8 18/40-45/8 18/20-45/16 54/20-45/8 18/60-45/8 18/20-45/24 90/20-45/8 18/20-45/40 18/20-45/56
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