Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/90 of 30/63?"
2190 × 3063 is 19.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90×30/63 21/90×60/63 63/90×30/63 21/90×90/63
© everydaycalculation.com