Solutions by everydaycalculation.com
1st number: 4 4/20, 2nd number: 10/20
8420 - 1020 is 3710.
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Related: 84/40-10/20 84/20-10/40 84/20-30/20 84/60-10/20 84/20-10/60 84/20-50/20 84/20-70/20
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