Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/42 of 20/21?"
2042 × 2021 is 200441.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42×20/21 20/42×40/21 20/84×20/21 20/42×20/42 60/42×20/21 20/42×60/21 20/42×20/63
© everydaycalculation.com