Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/40 of 20/36?"
2140 × 2036 is 724.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40×20/36 21/40×40/36 21/80×20/36 21/40×20/72 63/40×20/36 21/40×60/36
© everydaycalculation.com