Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 2/21 of 15/40?"
221 × 1540 is 128.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21×15/40 2/21×30/40 2/42×15/40 2/21×15/80 6/21×15/40 2/21×45/40 2/63×15/40 10/21×15/40 2/21×75/40 14/21×15/40
© everydaycalculation.com