Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/70 of 20/81?"
4070 × 2081 is 80567.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70×20/81 40/70×40/81 40/70×60/81
© everydaycalculation.com