Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 4/21 of 20/21?"
421 × 2021 is 80441.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21×20/21 4/21×40/21 4/42×20/21 4/21×20/42 12/21×20/21 4/21×60/21 4/63×20/21 4/21×20/63 20/21×20/21 28/21×20/21
© everydaycalculation.com