Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/21 of 28/70?"
521 × 2870 is 221.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21×28/70 5/21×56/70 5/42×28/70 15/21×28/70 5/21×84/70 5/63×28/70 25/21×28/70 35/21×28/70
© everydaycalculation.com