Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/81 of 42/60?"
2181 × 4260 is 49270.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/81×42/60 21/81×84/60 63/81×42/60
© everydaycalculation.com