Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 9/45?"
1221 × 945 is 435.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×9/45 12/21×18/45 12/42×9/45 12/21×9/90 36/21×9/45 12/21×27/45 12/63×9/45 60/21×9/45 84/21×9/45 12/21×63/45
© everydaycalculation.com