Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/54 of 15/63?"
2154 × 1563 is 554.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54×15/63 21/54×30/63 63/54×15/63 21/54×45/63 21/54×75/63
© everydaycalculation.com