Solutions by everydaycalculation.com
1st number: 4 0/4, 2nd number: 5/21
This multiplication involving fractions can also be rephrased as "What is 16/4 of 5/21?"
164 × 521 is 2021.
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Related: 32/4×5/21 16/4×10/21 16/8×5/21 16/4×5/42 48/4×5/21 16/4×15/21 16/12×5/21 16/4×5/63 80/4×5/21 16/4×25/21 16/20×5/21 16/4×35/21 16/28×5/21
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