Solutions by everydaycalculation.com
1st number: 1 9/21, 2nd number: 20/21
3021 - 2021 is 1021.
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Related: 60/21-20/21 30/21-40/21 30/42-20/21 30/21-20/42 90/21-20/21 30/21-60/21 30/63-20/21 30/21-20/63
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