Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/36 of 21/70?"
2136 × 2170 is 740.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36×21/70 21/36×42/70 21/72×21/70 63/36×21/70 21/36×63/70
© everydaycalculation.com