Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/80 of 45/81?"
580 × 4581 is 5144.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80×45/81 5/80×90/81 15/80×45/81 25/80×45/81 35/80×45/81
© everydaycalculation.com