Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 7/90?"
1221 × 790 is 245.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×7/90 12/21×14/90 12/42×7/90 36/21×7/90 12/21×21/90 12/63×7/90 60/21×7/90 12/21×35/90 84/21×7/90 12/21×49/90
© everydaycalculation.com