Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 6/40 of 21/42?"
640 × 2142 is 340.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40×21/42 6/80×21/42 6/40×21/84 18/40×21/42 6/40×63/42 30/40×21/42 42/40×21/42
© everydaycalculation.com