Solutions by everydaycalculation.com
1st number: 15/21, 2nd number: 3 1/5
1521 is smaller than 165
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Related: 30/21 and 16/5 15/21 and 32/5 15/42 and 16/5 15/21 and 16/10 45/21 and 16/5 15/21 and 48/5 15/63 and 16/5 15/21 and 16/15 75/21 and 16/5 15/21 and 80/5 15/21 and 16/25 15/21 and 16/35
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