Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/40 of 10/18?"
2040 × 1018 is 518.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40×20/18 20/80×10/18 20/40×10/36 60/40×10/18 20/40×30/18 20/40×10/54 20/40×50/18 20/40×10/90 20/40×70/18
© everydaycalculation.com