Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/80 of 15/40?"
2180 × 1540 is 63640.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/80×15/40 21/80×30/40 21/80×15/80 63/80×15/40 21/80×45/40 21/80×75/40
© everydaycalculation.com