Solutions by everydaycalculation.com
1st number: 1 2/3, 2nd number: 16/21
53 - 1621 is 1921.
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Related: 10/3-16/21 5/3-32/21 5/6-16/21 5/3-16/42 15/3-16/21 5/3-48/21 5/9-16/21 5/3-16/63 25/3-16/21 5/3-80/21 5/15-16/21 35/3-16/21 5/21-16/21
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