Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/28 of 20/63?"
2128 × 2063 is 521.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28×20/63 21/28×40/63 21/56×20/63 63/28×20/63 21/28×60/63 21/84×20/63
© everydaycalculation.com