Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/21 of 36/81?"
921 × 3681 is 421.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21×36/81 9/21×72/81 9/42×36/81 27/21×36/81 9/63×36/81 45/21×36/81 63/21×36/81
© everydaycalculation.com