Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/84 of 42/70?"
2184 × 4270 is 320.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84×42/70 21/84×84/70 63/84×42/70
© everydaycalculation.com