Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 7/70 of 21/80?"
770 × 2180 is 21800.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70×21/80 7/70×42/80 21/70×21/80 7/70×63/80 35/70×21/80 49/70×21/80
© everydaycalculation.com