Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/42 of 6/9?"
2142 × 69 is 13.
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Related: 21/42×12/9 21/84×6/9 21/42×6/18 63/42×6/9 21/42×18/9 21/42×6/27 21/42×30/9 21/42×6/45 21/42×42/9 21/42×6/63
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