Solutions by everydaycalculation.com
645 ÷ 2130 is 421.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/45÷21/30 6/45÷42/30 6/90÷21/30 6/45÷21/60 18/45÷21/30 6/45÷63/30 6/45÷21/90 30/45÷21/30 42/45÷21/30
© everydaycalculation.com