Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/80 of 15/90?"
2080 × 1590 is 124.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80×15/90 20/80×30/90 60/80×15/90 20/80×45/90 20/80×75/90
© everydaycalculation.com