Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/40 of 7/15?"
2140 × 715 is 49200.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40×7/15 21/40×14/15 21/80×7/15 21/40×7/30 63/40×7/15 21/40×21/15 21/40×7/45 21/40×35/15 21/40×7/75 21/40×49/15
© everydaycalculation.com