Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/90 of 21/40?"
990 × 2140 is 21400.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90×21/40 9/90×42/40 9/90×21/80 27/90×21/40 9/90×63/40 45/90×21/40 63/90×21/40
© everydaycalculation.com