Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 4 1/20
1820 + 8120 is 9920.
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Related: 36/20+81/20 18/40+81/20 18/20+81/40 54/20+81/20 18/60+81/20 18/20+81/60 90/20+81/20
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