Typographical question for writers

[annathepiper]

So if you want to type a sentence that has a clause separated off from the rest of the sentence by an em-dash or two (like this: "Blah blah blah--blah blah blah--blah blah."), what is the proper way to type this? I have discovered that this is causing some word count discrepancies since the way I was typing it before was throwing Word's word count off.