Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 16/21 of 18/81?"
1621 × 1881 is 32189.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21×18/81 16/21×36/81 16/42×18/81 48/21×18/81 16/21×54/81 16/63×18/81 80/21×18/81 16/21×90/81
© everydaycalculation.com