Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/81 of 4/20?"
2181 × 420 is 7135.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/81×4/20 21/81×8/20 21/81×4/40 63/81×4/20 21/81×12/20 21/81×4/60 21/81×28/20
© everydaycalculation.com