Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/90 of 40/90?"
390 × 4090 is 2135.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90×40/90 3/90×80/90 9/90×40/90 15/90×40/90 21/90×40/90
© everydaycalculation.com