Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/56 of 4/10?"
2156 × 410 is 320.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56×4/10 21/56×8/10 21/56×4/20 63/56×4/10 21/56×12/10 21/56×4/30 21/56×20/10 21/56×4/50 21/56×28/10 21/56×4/70
© everydaycalculation.com