Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/21 of 5/20?"
321 × 520 is 128.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21×5/20 3/21×10/20 3/42×5/20 3/21×5/40 9/21×5/20 3/21×15/20 3/63×5/20 3/21×5/60 15/21×5/20 3/21×25/20 3/21×35/20
© everydaycalculation.com