Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/21 of 28/50?"
2021 × 2850 is 815.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21×28/50 20/21×56/50 20/42×28/50 60/21×28/50 20/21×84/50 20/63×28/50
© everydaycalculation.com