Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/45 of 4/20?"
545 × 420 is 145.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/45×4/20 5/45×8/20 5/90×4/20 5/45×4/40 15/45×4/20 5/45×12/20 5/45×4/60 25/45×4/20 35/45×4/20 5/45×28/20
© everydaycalculation.com