Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 18/36 of 20/80?"
1836 × 2080 is 18.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36×40/80 18/72×20/80 54/36×20/80 18/36×60/80 90/36×20/80
© everydaycalculation.com