Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/90 of 12/30?"
2190 × 1230 is 775.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90×12/30 21/90×24/30 21/90×12/60 63/90×12/30 21/90×36/30 21/90×12/90 21/90×60/30 21/90×84/30
© everydaycalculation.com