\[\boxed{\mathbf{303}\mathbf{.}}\]
\[1)\log_{7}25 = \frac{\lg 25}{\lg 7} \approx\]
\[\approx \frac{1,39794}{0,84509} \approx 1,65\]
\[2)\log_{5}8 = \frac{\lg 8}{\lg 5} \approx\]
\[\approx \frac{0,90308}{0,69897} \approx 1,29\]
\[3)\log_{9}{0,75} = \frac{\lg{0,75}}{\lg 9} \approx\]
\[\approx \frac{- 0,12493}{0,95424} \approx - 0,13\]
\[4)\log_{0,75}{1,13} = \frac{\lg{1,13}}{\lg{0,75}} \approx\]
\[\approx \frac{0,05307}{- 0,12493} \approx - 0,42\]