Solutions by everydaycalculation.com
1st number: 15/21, 2nd number: 1 7/9
1521 is smaller than 169
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Related: 30/21 and 16/9 15/21 and 32/9 15/42 and 16/9 15/21 and 16/18 45/21 and 16/9 15/21 and 48/9 15/63 and 16/9 15/21 and 16/27 75/21 and 16/9 15/21 and 80/9 15/21 and 16/45 15/21 and 16/63
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