View difference between Paste ID: G4gxJ5zM and UMLWsXNy

 <p>Enter your £</p>
 <p><input type="text" id="number"></p>
-<button onclick="buttonClicked()">Enter</button>
+<button onclick="buttonClicked(document.getElementById('number').value)">Enter</button>
 
 <div id="result"></div>
 
 <script>
 
 var result = document.getElementById('result');
 
-function buttonClicked()
+function buttonClicked(number)
 {
 	result.innerHTML = '';
-	var number = document.getElementById('number').value;
+
 	result.innerHTML += 'There are ' + get20s(number) + ' twenty pence pieces in £' + number + '<br>';
 	result.innerHTML += 'There are ' + get10s(number) + ' ten pence pieces in £' + number + '<br>';
 }
 function get50s(number)
 {
 	return (number * 100) / 50;
 }
 function get20s(number)
 {
 	return (number * 100) / 20;
 }
 function get10s(number)
 {
 	return (number * 100) / 10;
 }
 </script>