Solutions by everydaycalculation.com
1st number: 21 0/2, 2nd number: 5 2/8
This multiplication involving fractions can also be rephrased as "What is 42/2 of 5 2/8?"
422 × 428 is 4414.
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Related: 84/2×42/8 42/2×84/8 42/4×42/8 42/2×42/16 42/6×42/8 42/2×42/24 42/10×42/8 42/2×42/40 42/14×42/8 42/2×42/56
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