Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/21 of 12/81?"
321 × 1281 is 4189.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21×12/81 3/21×24/81 3/42×12/81 9/21×12/81 3/21×36/81 3/63×12/81 15/21×12/81 3/21×60/81 3/21×84/81
© everydaycalculation.com