Consider the single bidirectional line in WDM optical network shown on page $33$ in slide $2.$ Find the system availability using the following information where Fiber optic cable has $500km$ of CC and $25$ hours of MTTR$.$ Round off the availability to $5$ decimal places. $(10$ points$)$

$\backslash$table$[[$Equipment$,$MTBF $($hrs$),$MTTR $($hrs$)],[$Bidirectional OA$,650,000,23],[\backslash$table$[[$Bidirectional WDM$],[$Line System$]],800,000,17]]$