Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 42/80 of 1/90?"
4280 × 190 is 71200.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80×1/90 42/80×2/90 42/80×3/90 42/80×5/90 42/80×7/90
© everydaycalculation.com