Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/60 of 8/9?"
2160 × 89 is 1445.
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Related: 42/60×8/9 21/60×16/9 21/60×8/18 63/60×8/9 21/60×24/9 21/60×8/27 21/60×40/9 21/60×8/45 21/60×56/9 21/60×8/63
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