Solutions by everydaycalculation.com
1220 - 112 is 3160.
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Related: 24/20-1/12 12/20-2/12 12/40-1/12 12/20-1/24 36/20-1/12 12/20-3/12 12/60-1/12 12/20-1/36 60/20-1/12 12/20-5/12 12/20-1/60 84/20-1/12 12/20-7/12 12/20-1/84
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