Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 72/90?"
1221 × 7290 is 1635.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×72/90 12/42×72/90 36/21×72/90 12/63×72/90 60/21×72/90 84/21×72/90
© everydaycalculation.com