If $x=16384$ and $y=2$
$\ln(x)=9.704$ $\ln(y)=0.6931$
$\log(x)=4.2144$ $\log(y)=0.3010$
If we divide $\frac{\ln(x)}{\ln(y)}$ we get $14$ and same answer for $\frac{\log(x)}{\log(y)}$.
So can anyone tell me the concept behind this? Why does dividing $\frac{\ln(x)}{\ln(y)}$ give the same result as $\frac{\log(x)}{\log(y)}$?