Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 15/90 of 15/60?"
1590 × 1560 is 124.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90×15/60 15/90×30/60 45/90×15/60 15/90×45/60 75/90×15/60 15/90×75/60
© everydaycalculation.com