Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/60 of 20/30?"
2160 × 2030 is 730.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60×20/30 21/60×40/30 21/60×20/60 63/60×20/30 21/60×60/30 21/60×20/90
© everydaycalculation.com