Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/72 of 3/63?"
2172 × 363 is 172.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/72×3/63 21/72×6/63 63/72×3/63 21/72×9/63 21/72×15/63 21/72×21/63
© everydaycalculation.com