Solutions by everydaycalculation.com
660 ÷ 640 is 23.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/60÷6/40 6/60÷12/40 6/60÷6/80 18/60÷6/40 6/60÷18/40 30/60÷6/40 6/60÷30/40 42/60÷6/40 6/60÷42/40
© everydaycalculation.com