Solutions by everydaycalculation.com
1st number: 8 0/5, 2nd number: 5/21
This multiplication involving fractions can also be rephrased as "What is 40/5 of 5/21?"
405 × 521 is 4021.
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Related: 80/5×5/21 40/5×10/21 40/10×5/21 40/5×5/42 40/5×15/21 40/15×5/21 40/5×5/63 40/5×25/21 40/25×5/21 40/5×35/21 40/35×5/21
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