Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/21 of 18/63?"
921 × 1863 is 649.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21×18/63 9/21×36/63 9/42×18/63 27/21×18/63 9/21×54/63 9/63×18/63 45/21×18/63 9/21×90/63 63/21×18/63
© everydaycalculation.com