Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/42 of 16/25?"
2142 × 1625 is 825.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42×32/25 21/84×16/25 21/42×16/50 63/42×16/25 21/42×48/25 21/42×16/75 21/42×80/25
© everydaycalculation.com