On the most recent exam on Prof. Xochi's class,

$5$ students earned a score of at least $95\%$
$13$ students earned a score of at least $90\%$
$27$ students earned a score of at least $85\%$
$50$ students earned a score of at least $80\%$

How many students earned a score of at least $85\%$ and less than $95\%$?