Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 42/70 of 8/9?"
4270 × 89 is 815.
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Related: 84/70×8/9 42/70×16/9 42/70×8/18 42/70×24/9 42/70×8/27 42/70×40/9 42/70×8/45 42/70×56/9 42/70×8/63
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