Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 4/28?"
1221 × 428 is 449.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×4/28 12/21×8/28 12/42×4/28 12/21×4/56 36/21×4/28 12/21×12/28 12/63×4/28 12/21×4/84 60/21×4/28 12/21×20/28 84/21×4/28
© everydaycalculation.com