How many places should you give your CV out to?

As many as possible!  First, make sure your CV is as perfect as possible: well edited, professionally presented, suitable for Australian employers.  Then, take your CV to as many places as possible that you would be willing to work at.  The more places you leave your resume, the more chance you have of getting a call-back.  Lots of businesses keep ‘drop-in’ resumes on file and look through them before advertising.  This is why it’s good to leave your resume with as many businesses as possible.