Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/40 of 40/63?"
1240 × 4063 is 421.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40×40/63 12/40×80/63 12/80×40/63 36/40×40/63 60/40×40/63 84/40×40/63
© everydaycalculation.com