Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 1/5 of 2/10?"
15 × 210 is 125.
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Related: 2/5×2/10 1/5×4/10 1/10×2/10 1/5×2/20 3/5×2/10 1/5×6/10 1/15×2/10 1/5×2/30 1/25×2/10 1/5×2/50 7/5×2/10 1/5×14/10 1/35×2/10 1/5×2/70
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