Solutions by everydaycalculation.com
1st number: 6 4/6, 2nd number: 6/63
This multiplication involving fractions can also be rephrased as "What is 40/6 of 6/63?"
406 × 663 is 4063.
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Related: 80/6×6/63 40/6×12/63 40/12×6/63 40/6×18/63 40/18×6/63 40/6×30/63 40/30×6/63 40/6×42/63 40/42×6/63
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