Solutions by everydaycalculation.com
1st number: 4 0/4, 2nd number: 6/63
164 ÷ 663 is 421.
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Related: 32/4÷6/63 16/4÷12/63 16/8÷6/63 48/4÷6/63 16/4÷18/63 16/12÷6/63 80/4÷6/63 16/4÷30/63 16/20÷6/63 16/4÷42/63 16/28÷6/63
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