Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/30 of 42/70?"
2130 × 4270 is 2150.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30×42/70 21/30×84/70 21/60×42/70 63/30×42/70 21/90×42/70
© everydaycalculation.com