Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/21 of 6/90?"
521 × 690 is 163.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21×6/90 5/21×12/90 5/42×6/90 15/21×6/90 5/21×18/90 5/63×6/90 25/21×6/90 5/21×30/90 35/21×6/90 5/21×42/90
© everydaycalculation.com