Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/56 of 4/5?"
2156 × 45 is 310.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56×4/5 21/56×8/5 21/56×4/10 63/56×4/5 21/56×12/5 21/56×4/15 21/56×20/5 21/56×4/25 21/56×28/5 21/56×4/35
© everydaycalculation.com