Solutions by everydaycalculation.com
1st number: 21 0/2, 2nd number: 8/21
This multiplication involving fractions can also be rephrased as "What is 42/2 of 8/21?"
422 × 821 is 81.
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Related: 84/2×8/21 42/2×16/21 42/4×8/21 42/2×8/42 42/2×24/21 42/6×8/21 42/2×8/63 42/2×40/21 42/10×8/21 42/2×56/21 42/14×8/21
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