Solutions by everydaycalculation.com
1st number: 4 0/3, 2nd number: 8/21
123 + 821 is 9221.
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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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