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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Functions</h1>
<p>Using a function as a variable:</p>
<p id="demo"></p>
<script>
let text = "The temperature is " + toCelsius(77) + " Celsius.";
document.getElementById("demo").innerHTML = text;
function toCelsius(fahrenheit) {
  return (5/9) * (fahrenheit-32);
} 
</script>
</body>
</html>