Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 40/42 of 9/21?"
4042 × 921 is 2049.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42×9/21 40/42×18/21 40/84×9/21 40/42×9/42 40/42×27/21 40/42×9/63 40/42×45/21 40/42×63/21
© everydaycalculation.com