Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/70 of 21/40?"
1270 × 2140 is 9100.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70×21/40 12/70×42/40 12/70×21/80 36/70×21/40 12/70×63/40 60/70×21/40 84/70×21/40
© everydaycalculation.com