Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/21 of 6/30?"
2021 × 630 is 421.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21×6/30 20/21×12/30 20/42×6/30 20/21×6/60 60/21×6/30 20/21×18/30 20/63×6/30 20/21×6/90 20/21×42/30
© everydaycalculation.com