Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 8/10 of 21/60?"
810 × 2160 is 725.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10×21/60 8/10×42/60 8/20×21/60 24/10×21/60 8/10×63/60 8/30×21/60 40/10×21/60 8/50×21/60 56/10×21/60 8/70×21/60
© everydaycalculation.com