Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/63 of 6/7?"
2163 × 67 is 27.
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Related: 42/63×6/7 21/63×12/7 21/63×6/14 21/63×18/7 21/63×6/21 21/63×30/7 21/63×6/35 21/63×42/7 21/63×6/49
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