Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/21 of 8/40?"
1021 × 840 is 221.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21×8/40 10/21×16/40 10/42×8/40 10/21×8/80 30/21×8/40 10/21×24/40 10/63×8/40 50/21×8/40 70/21×8/40 10/21×56/40
© everydaycalculation.com