Wilma,

There are 29.57 milliliters in a US ounce and one millilitre is 1 cubic centimetre so in 782 cubic centimetres there are 782/29.57 = 26.45 ounces.

You can obtain this result and many others directly from the Google search engine. Just type

782 cubic centimeters in ounces

and Google will return the result

782 (cubic centimeters) = 26.4425656 US fluid ounces

If you want Imperial fluid ounces just ask Google for

782 cubic centimeters in Imperial ounces

Penny