Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 16/21 of 16/90?"
1621 × 1690 is 128945.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21×16/90 16/21×32/90 16/42×16/90 48/21×16/90 16/21×48/90 16/63×16/90 80/21×16/90 16/21×80/90
© everydaycalculation.com