Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 24/40 of 63/81?"
2440 × 6381 is 715.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/40×63/81 24/80×63/81 72/40×63/81
© everydaycalculation.com