Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/63 of 7/80?"
2163 × 780 is 7240.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/63×7/80 21/63×14/80 21/63×21/80 21/63×35/80 21/63×49/80
© everydaycalculation.com