Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 28/70 of 12/21?"
2870 × 1221 is 835.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70×12/21 28/70×24/21 28/70×12/42 84/70×12/21 28/70×36/21 28/70×12/63 28/70×60/21 28/70×84/21
© everydaycalculation.com