Shows a stem and leaf plot of the ratings (out of 100 ) of an actor's performance in different movies.
Stem Leaf
4 57
5 5
6 2
7 3789

Performance rating of an actor.
Here 6 | 4 means Rating of 64
What is the median rating, if 1 points are added to all of his ratings and then converted to 40 points. (Correct up to 2 decimal point accuracy.)