Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/21 of 4/90?"
321 × 490 is 2315.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21×4/90 3/21×8/90 3/42×4/90 9/21×4/90 3/21×12/90 3/63×4/90 15/21×4/90 3/21×20/90 3/21×28/90
© everydaycalculation.com