Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 1/3 of 1/5?"
13 × 15 is 115.
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Related: 2/3×1/5 1/3×2/5 1/6×1/5 1/3×1/10 1/3×3/5 1/9×1/5 1/3×1/15 5/3×1/5 1/15×1/5 1/3×1/25 7/3×1/5 1/3×7/5 1/21×1/5 1/3×1/35
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