Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/42 of 40/54?"
2142 × 4054 is 1027.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42×80/54 21/84×40/54 63/42×40/54
© everydaycalculation.com