Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/30 of 21/45?"
2130 × 2145 is 49150.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30×21/45 21/30×42/45 21/60×21/45 21/30×21/90 63/30×21/45 21/30×63/45 21/90×21/45
© everydaycalculation.com