Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/81 of 21/70?"
2081 × 2170 is 227.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/81×21/70 20/81×42/70 60/81×21/70 20/81×63/70
© everydaycalculation.com