Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/45 of 21/40?"
2045 × 2140 is 730.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45×21/40 20/45×42/40 20/90×21/40 20/45×21/80 60/45×21/40 20/45×63/40
© everydaycalculation.com