Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/64 of 8/10?"
2164 × 810 is 2180.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/64×8/10 21/64×16/10 21/64×8/20 63/64×8/10 21/64×24/10 21/64×8/30 21/64×40/10 21/64×8/50 21/64×56/10 21/64×8/70
© everydaycalculation.com