Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/21 of 10/15?"
1021 × 1015 is 2063.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21×10/15 10/21×20/15 10/42×10/15 10/21×10/30 30/21×10/15 10/21×30/15 10/63×10/15 10/21×10/45 50/21×10/15 10/21×50/15 10/21×10/75 70/21×10/15 10/21×70/15
© everydaycalculation.com