To simplify \( \frac{a^{67}}{b^{34}} \), you can just write it in its current form since it cannot be simplified further unless you have specific values or relationships between \( a \) and \( b \).
Thus, the simplified expression remains:
\[ \frac{a^{67}}{b^{34}} \]
If you meant to simplify the expression further in terms of factoring or rearranging, please provide more specific instructions.