Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 1/6 of 3/21?"
16 × 321 is 142.
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Related: 2/6×3/21 1/6×6/21 1/12×3/21 1/6×3/42 3/6×3/21 1/6×9/21 1/18×3/21 1/6×3/63 5/6×3/21 1/6×15/21 1/30×3/21 7/6×3/21 1/42×3/21
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