How many gallons is this?

[_BoidFinatic_]

Someone I know has a red tail boa thats around the size of my big girl but their's is in a tank thats 36inches in length and 2ft wide and tall. I was wondering how many gallons this would be and how do you figure out the gallons?

36" x 24" x 24" x 2.54 x 2.54 x 2.54
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1000 = x


x
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3.8 = 89.4 gallons [aka 90gal]

(I build a lot of cages, don't ask me how I know this)