Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 45/72 of 8/21?"
4572 × 821 is 521.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72×8/21 45/72×16/21 45/72×8/42 45/72×24/21 45/72×8/63 45/72×40/21 45/72×56/21
© everydaycalculation.com