Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 2/10 of 4/21?"
210 × 421 is 4105.
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Related: 4/10×4/21 2/10×8/21 2/20×4/21 2/10×4/42 6/10×4/21 2/10×12/21 2/30×4/21 2/10×4/63 2/10×20/21 2/50×4/21 14/10×4/21 2/10×28/21 2/70×4/21
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