Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/21 of 8/21?"
521 × 821 is 40441.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21×8/21 5/21×16/21 5/42×8/21 5/21×8/42 15/21×8/21 5/21×24/21 5/63×8/21 5/21×8/63 25/21×8/21 5/21×40/21 35/21×8/21 5/21×56/21
© everydaycalculation.com