title: Divide two variables in bash
body: <p>I am trying to divide two var in bash, this is what I've got:</p>
  
  <pre><code>var1=3;
  var2=4;
  
  echo ($var1/$var2)
  </code></pre>
  
  <p>I always get a syntax error.
  Does anyone knows what's wrong?</p>