Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/90 of 30/70?"
1290 × 3070 is 235.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90×30/70 12/90×60/70 36/90×30/70 12/90×90/70 60/90×30/70 84/90×30/70
© everydaycalculation.com