Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/40 of 30/40?"
2140 × 3040 is 63160.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40×30/40 21/40×60/40 21/80×30/40 21/40×30/80 63/40×30/40 21/40×90/40
© everydaycalculation.com