Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/21 of 12/21?"
2021 × 1221 is 80147.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21×12/21 20/21×24/21 20/42×12/21 20/21×12/42 60/21×12/21 20/21×36/21 20/63×12/21 20/21×12/63 20/21×60/21 20/21×84/21
© everydaycalculation.com