Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 8/21
123 - 821 is 7621.
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Related: 24/3-8/21 12/3-16/21 12/6-8/21 12/3-8/42 36/3-8/21 12/3-24/21 12/9-8/21 12/3-8/63 60/3-8/21 12/3-40/21 12/15-8/21 84/3-8/21 12/3-56/21 12/21-8/21
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