Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/21 of 15/30?"
2021 × 1530 is 1021.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21×15/30 20/42×15/30 20/21×15/60 60/21×15/30 20/21×45/30 20/63×15/30 20/21×15/90 20/21×75/30
© everydaycalculation.com