[tex]\frac{1- \frac{1}{1+ \frac{1}{398,756} } }{ \frac{1}{1- \frac{1}{398,756} } } = \frac{1- \frac{1}{ \frac{398,756}{398,756}+ \frac{1}{398,756} } }{ \frac{1}{ \frac{398,756}{398,756}- \frac{1}{398,756} } } = \frac{1- \frac{1}{ \frac{398,757}{398,756} } }{ \frac{1}{ \frac{398,755}{398,756} } } =\\\\\\= \frac{1- \frac{398,756} {398,757} }{ \frac{398,756}{398,755} } = \frac{ \frac{398,757}{398,757}- \frac{398,756} {398,757} }{ \frac{398,756}{398,755} } = \frac{ \frac{1}{398,757} }{ \frac{398,756}{398,755} } =[/tex]
[tex]\frac{1}{398,757} : \frac{398,756}{398,755} =\frac{1}{398,757} \cdot \frac{398,755} {398,756}=\frac{398,755}{159,006,746,292}[/tex]