Solutions by everydaycalculation.com
1st number: 10 0/4, 2nd number: 4/21
This multiplication involving fractions can also be rephrased as "What is 40/4 of 4/21?"
404 × 421 is 4021.
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Related: 80/4×4/21 40/4×8/21 40/8×4/21 40/4×4/42 40/4×12/21 40/12×4/21 40/4×4/63 40/4×20/21 40/20×4/21 40/4×28/21 40/28×4/21
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