Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/42 of 35/64?"
2142 × 3564 is 35128.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42×70/64 21/84×35/64 63/42×35/64
© everydaycalculation.com