Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/15 of 21/45?"
515 × 2145 is 745.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15×21/45 5/15×42/45 5/30×21/45 5/15×21/90 5/15×63/45 5/45×21/45 25/15×21/45 5/75×21/45 35/15×21/45
© everydaycalculation.com