Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/60 of 3/80?"
2160 × 380 is 211600.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60×3/80 21/60×6/80 63/60×3/80 21/60×9/80 21/60×15/80 21/60×21/80
© everydaycalculation.com