Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/21 of 6/90?"
921 × 690 is 135.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21×6/90 9/21×12/90 9/42×6/90 27/21×6/90 9/21×18/90 9/63×6/90 45/21×6/90 9/21×30/90 63/21×6/90 9/21×42/90
© everydaycalculation.com