Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 8/21 of 16/81?"
821 × 1681 is 1281701.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21×16/81 8/21×32/81 8/42×16/81 24/21×16/81 8/21×48/81 8/63×16/81 40/21×16/81 8/21×80/81 56/21×16/81
© everydaycalculation.com