Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/10 of 3/81?"
510 × 381 is 154.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10×6/81 5/20×3/81 15/10×3/81 5/10×9/81 5/30×3/81 25/10×3/81 5/10×15/81 5/50×3/81 35/10×3/81 5/10×21/81 5/70×3/81
© everydaycalculation.com