Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 28/70 of 40/81?"
2870 × 4081 is 1681.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70×40/81 28/70×80/81 84/70×40/81
© everydaycalculation.com