Solutions by everydaycalculation.com
1st number: 21 1/3, 2nd number: 6 4/6
This multiplication involving fractions can also be rephrased as "What is 64/3 of 6 4/6?"
643 × 406 is 12809.
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Related: 64/3×80/6 64/6×40/6 64/3×40/12 64/9×40/6 64/3×40/18 64/15×40/6 64/3×40/30 64/21×40/6 64/3×40/42
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