Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/54 of 10/80?"
2154 × 1080 is 7144.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54×10/80 21/54×20/80 63/54×10/80 21/54×30/80 21/54×50/80 21/54×70/80
© everydaycalculation.com