Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/40 of 1/90?"
2140 × 190 is 71200.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40×1/90 21/40×2/90 21/80×1/90 63/40×1/90 21/40×3/90 21/40×5/90 21/40×7/90
© everydaycalculation.com