Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/21 of 10/80?"
321 × 1080 is 156.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21×10/80 3/21×20/80 3/42×10/80 9/21×10/80 3/21×30/80 3/63×10/80 15/21×10/80 3/21×50/80 3/21×70/80
© everydaycalculation.com