Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/30 of 7/80?"
2130 × 780 is 49800.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30×7/80 21/30×14/80 21/60×7/80 63/30×7/80 21/30×21/80 21/90×7/80 21/30×35/80 21/30×49/80
© everydaycalculation.com