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[improvising an educational song
] Dewey Finn
: Math is a wonderful thing. Math is a really cool thing. So get off your ath, let's do some math. Math, math, math, math, math. Three minus four is? Summer Hathaway
: Negative one. Dewey Finn
: That's right. And six times a billion is? Marco
: Six billion? Dewey Finn
: Nailed it. And fifty-four is forty-five more than what is the answer, Marta? Marta
: Nine. Dewey Finn
: No, it's eight. Marta
: ...No, it's nine. Dewey Finn
: ...Yes, I was testing you... it's nine. And that's a magic number.