title: Android countDownTimer - make millisUntilFinished float
body: <p>I have a timer:</p>
  
  <pre><code>CountDownTimer sample = new CountDownTimer() {
      @Override
      public void onTick(long millisUntilFinished) {
  
      }
  
      @Override
      public void onFinish() {
  
      }
  };
  </code></pre>
  
  <p>And I want to make the <code>millisUntilFinished</code> to a float.<br>
  how to do it? Thanks</p>