Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/28 of 15/90?"
2128 × 1590 is 18.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28×15/90 21/28×30/90 21/56×15/90 63/28×15/90 21/28×45/90 21/84×15/90 21/28×75/90
© everydaycalculation.com