Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/70 of 7/20?"
2170 × 720 is 21200.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70×7/20 21/70×14/20 21/70×7/40 63/70×7/20 21/70×21/20 21/70×7/60 21/70×35/20 21/70×49/20
© everydaycalculation.com