Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/81 of 50/81?"
4081 × 5081 is 20006561.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/81×50/81
© everydaycalculation.com