Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/12 of 21/40?"
912 × 2140 is 63160.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12×21/40 9/12×42/40 9/24×21/40 9/12×21/80 27/12×21/40 9/12×63/40 9/36×21/40 45/12×21/40 9/60×21/40 63/12×21/40 9/84×21/40
© everydaycalculation.com