Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/80 of 21/30?"
580 × 2130 is 7160.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80×21/30 5/80×42/30 5/80×21/60 15/80×21/30 5/80×63/30 5/80×21/90 25/80×21/30 35/80×21/30
© everydaycalculation.com