Simplify. \( \frac{\frac{c^{2}-d^{2}}{c d}}{\frac{c-d}{d}} \) The simplified expression is \( \square \).

To simplify the expression \( \frac{\frac{c^{2}-d^{2}}{c d}}{\frac{c-d}{d}} \), start by recognizing that \( c^2 - d^2 \) can be factored using the difference of squares: \[ c^2 - d^2 = (c - d)(c + d) \] Now, substituting this into the expression gives: \[ \frac{\frac{(c - d)(c + d)}{c d}}{\frac{c - d}{d}} \] Next, we can rewrite the fraction in the denominator: \[ \frac{(c - d)(c + d)}{c d} \div \frac{c - d}{d} = \frac{(c - d)(c + d)}{c d} \times \frac{d}{c - d} \] Notice that \( c - d \) in the numerator and denominator cancels out (assuming \( c \neq d \)): \[ = \frac{(c + d)}{c} \] The final simplified expression is: \[ = \frac{c + d}{c} \] Thus, the result is: \[ \frac{c + d}{c} \] The simplified expression is \( \frac{c + d}{c} \).