Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/81 of 21/35?"
2081 × 2135 is 427.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/81×21/35 20/81×42/35 20/81×21/70 60/81×21/35 20/81×63/35
© everydaycalculation.com