Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/60 of 12/48?"
2160 × 1248 is 780.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60×12/48 21/60×24/48 21/60×12/96 63/60×12/48 21/60×36/48 21/60×60/48 21/60×84/48
© everydaycalculation.com