Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 9/90 of 21/60?"
990 × 2160 is 7200.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90×21/60 9/90×42/60 27/90×21/60 9/90×63/60 45/90×21/60 63/90×21/60
© everydaycalculation.com