Question 589064
{{{ log( 5, r/s ) = log( 5, r ) - log( 5, s ) }}}
You can check it this way:
{{{ log( 5, 125/5 ) = log( 5, 125 ) - log( 5, 5 ) }}}
{{{ log( 5, 25 ) = 2 }}}
{{{ log( 5, 125 ) - log( 5, 5 ) = 3 - 1 }}}
It works