Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/90 of 15/81?"
1290 × 1581 is 281.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90×15/81 12/90×30/81 36/90×15/81 12/90×45/81 60/90×15/81 12/90×75/81 84/90×15/81
© everydaycalculation.com