Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/90 of 28/72?"
4090 × 2872 is 1481.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90×28/72 40/90×56/72 40/90×84/72
© everydaycalculation.com