Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/70 of 12/20?"
2170 × 1220 is 950.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70×12/20 21/70×24/20 21/70×12/40 63/70×12/20 21/70×36/20 21/70×12/60 21/70×60/20 21/70×84/20
© everydaycalculation.com