Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/45 of 2/10?"
2145 × 210 is 775.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45×2/10 21/45×4/10 21/90×2/10 21/45×2/20 63/45×2/10 21/45×6/10 21/45×2/30 21/45×2/50 21/45×14/10 21/45×2/70
© everydaycalculation.com