Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/50 of 21/40?"
2150 × 2140 is 4412000.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50×21/40 21/50×42/40 21/50×21/80 63/50×21/40 21/50×63/40
© everydaycalculation.com