Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 9/42?"
1221 × 942 is 649.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×9/42 12/21×18/42 12/42×9/42 12/21×9/84 36/21×9/42 12/21×27/42 12/63×9/42 60/21×9/42 12/21×45/42 84/21×9/42 12/21×63/42
© everydaycalculation.com