Evaluate. Write your answer as a whole number or as a simplified fraction. \[ \frac{4^{9}}{4^{5}}=\square \]

To evaluate \(\frac{4^{9}}{4^{5}}\), we can use the properties of exponents. According to the quotient rule of exponents, when we divide two powers with the same base, we subtract the exponents. So, we have: \[ \frac{4^{9}}{4^{5}} = 4^{9 - 5} = 4^{4}. \] Now, calculating \(4^{4}\): \[ 4^{4} = 4 \times 4 \times 4 \times 4 = 256. \] Thus, the answer is: \[ \boxed{256}. \]