text: var btn = document.getElementById('print-nums-button');
  
  function returnNumberOfDivElements(body) {
      var count = document.getElementsByTagName('div').length;
      return count;
  }
  btn.addEventListener('click', function () {
      var body = window.body;
  	var resultArea = document.getElementById('result');
      var numberOfDivs = returnNumberOfDivElements(body);
  	result.innerHTML = "Div elements in the page are: " + numberOfDivs;
  })