Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 15/70 of 21/42?"
1570 × 2142 is 328.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70×21/42 15/70×21/84 45/70×21/42 15/70×63/42 75/70×21/42
© everydaycalculation.com