Solutions by everydaycalculation.com
1820 - 112 is 4960.
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Related: 36/20-1/12 18/20-2/12 18/40-1/12 18/20-1/24 54/20-1/12 18/20-3/12 18/60-1/12 18/20-1/36 90/20-1/12 18/20-5/12 18/20-1/60 18/20-7/12 18/20-1/84
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