Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/21 of 7/40?"
321 × 740 is 140.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21×7/40 3/21×14/40 3/42×7/40 3/21×7/80 9/21×7/40 3/21×21/40 3/63×7/40 15/21×7/40 3/21×35/40 3/21×49/40
© everydaycalculation.com