Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/24 of 5/21?"
2124 × 521 is 524.
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Related: 42/24×5/21 21/24×10/21 21/48×5/21 21/24×5/42 63/24×5/21 21/24×15/21 21/72×5/21 21/24×5/63 21/24×25/21 21/24×35/21
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