Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/21 of 21/40?"
921 × 2140 is 940.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21×21/40 9/21×42/40 9/42×21/40 9/21×21/80 27/21×21/40 9/21×63/40 9/63×21/40 45/21×21/40 63/21×21/40
© everydaycalculation.com