Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 30/42 of 21/63?"
3042 × 2163 is 521.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42×21/63 30/42×42/63 30/84×21/63 90/42×21/63
© everydaycalculation.com