Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/21 of 18/90?"
921 × 1890 is 335.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21×18/90 9/21×36/90 9/42×18/90 27/21×18/90 9/21×54/90 9/63×18/90 45/21×18/90 63/21×18/90
© everydaycalculation.com