title: Too few arguments in formula
body: <p>All Excel-formulas with more than 1 argument, like the following, don't work. </p>
  
  <pre><code>=ROUNDDOWN(1.23, 0)
  </code></pre>
  
  <p>The Error-Message "you have entered too few arguements for this function." appears. Formulas with only one argument work. </p>
  
  <p>It even appears when I create the formula with the formula-wizard. </p>
  
  <p>Even uninstalling and reinstalling Excel doesn't fix the problem. </p>
  
  <p>Anyone know a fix?</p>