Solutions by everydaycalculation.com
1st number: 21 0/2, 2nd number: 1/63
This multiplication involving fractions can also be rephrased as "What is 42/2 of 1/63?"
422 × 163 is 13.
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Related: 84/2×1/63 42/2×2/63 42/4×1/63 42/2×3/63 42/6×1/63 42/2×5/63 42/10×1/63 42/2×7/63 42/14×1/63
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