Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 63/90 of 40/70?"
6390 × 4070 is 25.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90×80/70
© everydaycalculation.com