Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 6/42 of 10/12?"
642 × 1012 is 542.
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Related: 12/42×10/12 6/42×20/12 6/84×10/12 6/42×10/24 18/42×10/12 6/42×30/12 6/42×10/36 30/42×10/12 6/42×50/12 6/42×10/60 6/42×70/12 6/42×10/84
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