That is 7.055 ounces.
1 ounce [US, liquid] = 29.574 cubic centimeters 60 cubic centimeter = 2.029 ounces [US, liquid]
2,000 cubic feet equals: 14,960 US liquid gallons.
957.5 US fluid ounces per cubic foot.
7.3 cubic inches equals about four US fluid ounces.
That depends upon whether you meant fluid ounces -- which measure volume -- or weight ounces. It is possible to convert cubic inches and fluid ounces, since both are units of volume. But weight ounces -- as in 16 ounces to the pound -- is a different story. One ounce of tungsten will occupy far less volume than an ounce of, say, styrofoam! Assuming you mean fluid (or liquid) ounces: 1 ounce [US, liquid] = 1.805 cubic inches.
74.81 gallons of liquid.
There are 29.57 cubic centimeters in a u.s. ounce. 750 divided by 29.57 equals 25.36 ounces in 750 cubic centimeters or roughly 25 and a third ounces.
1800 cubic centimeter = 60.865240863 ounce [US, liquid] 1800 cubic centimeter = 63.35114351 ounce [UK, liquid]
1 US liquid gallon = 3785.41 cubic centimeters
The question is incomplete. It needs a second measurement. Ounce is a volume, so it needs another volume measurement. 3 liquid ounces = 0.25 cup, or 59 cubic centimeters, 12 teaspoons. (I have a cunningly little progam called Metric Converter.)