Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/50 of 12/90?"
1250 × 1290 is 4125.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/50×12/90 12/50×24/90 36/50×12/90 12/50×36/90 60/50×12/90 12/50×60/90 84/50×12/90 12/50×84/90
© everydaycalculation.com