Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/42 of 40/81?"
2042 × 4081 is 4001701.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42×40/81 20/42×80/81 20/84×40/81 60/42×40/81
© everydaycalculation.com