log(13x)=6.58

log(13x)=6.58   x=?

$$\small{\text{
$
\begin{array}{rcll}
\log_{10}(13x) &=& 6.58 & | \quad 10^{()} \\\\
13x &=& 10^{6.58} & | \quad :13 \\\\
x &=& \frac{10^{6.58}}{13}\\\\
x &=& 292453.381785
\end{array}
$
}}$$