To find the final quotient, we can break it down into two steps.
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Divide \(-72\) by \(-4\): \[ \frac{-72}{-4} = 18 \] (Negative divided by negative is positive.)
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Now, take the quotient \(18\) and divide it by \(-9\): \[ \frac{18}{-9} = -2 \] (Positive divided by negative is negative.)
So, the final quotient is \(-2\).