Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 25/45 of 45/70?"
2545 × 4570 is 514.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/45×45/70 25/45×90/70 25/90×45/70 75/45×45/70
© everydaycalculation.com