Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/28 of 45/90?"
2128 × 4590 is 38.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28×45/90 21/56×45/90 63/28×45/90 21/84×45/90
© everydaycalculation.com