Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 8/21 of 20/90?"
821 × 2090 is 16189.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21×20/90 8/21×40/90 8/42×20/90 24/21×20/90 8/21×60/90 8/63×20/90 40/21×20/90 56/21×20/90
© everydaycalculation.com