I believe that a wine glass is just a more specific type of stemware. In this case then it depends on the specific type of stemware or wine glass as to which holds more fluid ounces.
128 ounces in a gallon 128/6.25 = 201/2 glasses approximately
40 ounces is equal to 5 cups, so you would need 5 glasses to hold 40 ounces of water.
If you have 8-ounce glasses, that much water will fill 7 of them. If your glasses hold 10 ounces, then 5.6 of them. If your glasses hold 12 ounces, then (4 and 2/3) of them. If your glasses hold 16 ounces, then 3.5 of them.
5 1/3. All you have to do is divide 64 and 12.
About 319.2 fluid ounces.
There are 8 ounces per cup. That means there are 148 ÷ 8 = 18.5 cups of water. Many drinking glasses hold 12 or 16 ounces of liquid. There would be just over 12 glasses of water if the glass holds 12 ounces or just over 8 glasses of water if the glass holds 16 ounces.
In order to calculate how many fluid ounces a pot would hold, you have to know what size the pot is. For example, if the pot is 1 quart, it would hold 32 fluid ounces.
Twelve fluid ounces.
2 US gallons of space is 256 fluid ounces of space.
There are approximately 67.6 ounces in 2 liters. Therefore, 20 liters is equivalent to about 676 ounces. If each glass can hold 8 ounces, then 676 ounces can fill about 84.5 glasses. Since you cannot have half glasses, you could fill about 84 glasses with 20 liters of liquid.
250 mL equates to about 8.453 US fluid ounces.
There are 8-ounce glasses, 10-ounce glasses, 12-ounce glasses, and even some 16-ounce glasses. There are also shot glasses, which average 11/2 ounces, as well as 4-ounce juice glasses. We'd have to see the glass and perform some tests on it in order to be sure.