Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 42/80 of 8/9?"
4280 × 89 is 715.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80×8/9 42/80×16/9 42/80×8/18 42/80×24/9 42/80×8/27 42/80×40/9 42/80×8/45 42/80×56/9 42/80×8/63
© everydaycalculation.com