Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/81 of 8/10?"
4081 × 810 is 3281.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/81×8/10 40/81×16/10 40/81×8/20 40/81×24/10 40/81×8/30 40/81×40/10 40/81×8/50 40/81×56/10 40/81×8/70
© everydaycalculation.com