Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 6/90?"
1221 × 690 is 4105.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×6/90 12/21×12/90 12/42×6/90 36/21×6/90 12/21×18/90 12/63×6/90 60/21×6/90 12/21×30/90 84/21×6/90 12/21×42/90
© everydaycalculation.com