Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 15/70 of 12/90?"
1570 × 1290 is 135.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70×12/90 15/70×24/90 45/70×12/90 15/70×36/90 75/70×12/90 15/70×60/90 15/70×84/90
© everydaycalculation.com