Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/36 of 21/81?"
2136 × 2181 is 49324.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36×21/81 21/36×42/81 21/72×21/81 63/36×21/81 21/36×63/81
© everydaycalculation.com