Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/25 of 21/40?"
2125 × 2140 is 4411000.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25×21/40 21/25×42/40 21/50×21/40 21/25×21/80 63/25×21/40 21/25×63/40 21/75×21/40
© everydaycalculation.com