Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/21 of 42/75?"
521 × 4275 is 215.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21×42/75 5/21×84/75 5/42×42/75 15/21×42/75 5/63×42/75 25/21×42/75 35/21×42/75
© everydaycalculation.com