I need help placing in order from least to greatest. Is this right. I don't know which is the least.

27 cups = there is 8 oz in 1 cup (27x8 is 216 oz

2 gallons = there is 16 cups in a gallon (16x2)

9 quarts= there is 4 cups in 1 qt (9x4)

27 cups x 8 oz = 216 oz

2 gallons = 16 x 2 x 8 = ?

9 quarts = 9 x 4 x 8 = ??