Believe it or not, there is a way to understand Beethoven's genius past the first eight notes. As you'll soon discover, a symphony is a form of classical music. Form is the arrangement of sections within a piece of music, and understanding how these sections work together can help the listener make sense of what the composer was trying to express.
1 quart is 32 fluid ounces...7 quarts would be 7 times 32 which is 224 fluid ounces.
There are 64 fluid ounces (1/2 gallon) in two  quarts. (US) 2 quarts is 64 fluid ounces or 1/2 gallon.