\(\left(125^3.5^5-25^7\right):\frac{2004}{2005}\)
\(=\left[\left(5^3\right)^3.5^5-\left(5^5\right)^7\right].\frac{2005}{2004}\)
\(=\left(5^9.5^5-5^{14}\right).\frac{2005}{2004}\)
\(=\left(5^{14}-5^{14}\right).\frac{2005}{2004}\)
\(=0.\frac{2005}{2004}=0\)