Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 15/80 of 15/60?"
1580 × 1560 is 364.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80×15/60 15/80×30/60 45/80×15/60 15/80×45/60 75/80×15/60 15/80×75/60
© everydaycalculation.com