Game 10 and 11

Game eleven. I tell you the answer and one simily then you gues what all the similes equal.

:D = 4
:) = 12
= A number between 3 and 9

:) + :) + + + - :D = :D

The last two similes represent one number but the two different digits. So it is forty-somthing.

Enjoy :D

Game 11 will be decided by another Admin. Who will edit this post.