Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 15/21 of 20/60?"
1521 × 2060 is 521.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21×20/60 15/21×40/60 15/42×20/60 45/21×20/60 15/63×20/60 75/21×20/60
© everydaycalculation.com