Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/80 of 9/42?"
2180 × 942 is 9160.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/80×9/42 21/80×18/42 21/80×9/84 63/80×9/42 21/80×27/42 21/80×45/42 21/80×63/42
© everydaycalculation.com