Solutions by everydaycalculation.com
1st number: 7 7/8, 2nd number: 16/63
638 ÷ 1663 is 3969128.
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Related: 63/8÷32/63 63/16÷16/63 63/8÷48/63 63/24÷16/63 63/8÷80/63 63/40÷16/63 63/56÷16/63
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