Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/45 of 21/30?"
1245 × 2130 is 1475.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45×21/30 12/45×42/30 12/90×21/30 12/45×21/60 36/45×21/30 12/45×63/30 12/45×21/90 60/45×21/30 84/45×21/30
© everydaycalculation.com