Solutions by everydaycalculation.com
1st number: 6/45, 2nd number: 1 2/4
645 is smaller than 64
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Related: 12/45 and 6/4 6/45 and 12/4 6/90 and 6/4 6/45 and 6/8 18/45 and 6/4 6/45 and 18/4 6/45 and 6/12 30/45 and 6/4 6/45 and 30/4 6/45 and 6/20 42/45 and 6/4 6/45 and 42/4 6/45 and 6/28
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