Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 1/72 of 21/80?"
172 × 2180 is 71920.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72×21/80 1/72×42/80 3/72×21/80 1/72×63/80 5/72×21/80 7/72×21/80
© everydaycalculation.com