Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 1/3 of 4/7?"
13 × 47 is 421.
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Related: 2/3×4/7 1/3×8/7 1/6×4/7 1/3×4/14 1/3×12/7 1/9×4/7 1/3×4/21 5/3×4/7 1/3×20/7 1/15×4/7 1/3×4/35 7/3×4/7 1/3×28/7 1/21×4/7 1/3×4/49
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