Solutions by everydaycalculation.com
1st number: 21 0/2, 2nd number: 12 0/7
This multiplication involving fractions can also be rephrased as "What is 42/2 of 12 0/7?"
422 × 847 is 2521.
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Related: 84/2×84/7 42/4×84/7 42/2×84/14 42/6×84/7 42/2×84/21 42/10×84/7 42/2×84/35 42/14×84/7 42/2×84/49
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