Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 18/21 of 4/21?"
1821 × 421 is 849.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21×4/21 18/21×8/21 18/42×4/21 18/21×4/42 54/21×4/21 18/21×12/21 18/63×4/21 18/21×4/63 90/21×4/21 18/21×20/21 18/21×28/21
© everydaycalculation.com