Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/24 of 4/90?"
2124 × 490 is 7180.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24×4/90 21/24×8/90 21/48×4/90 63/24×4/90 21/24×12/90 21/72×4/90 21/24×20/90 21/24×28/90
© everydaycalculation.com