writeln & radbryt js

<script>
function calc(name, firstNumber, secondNumber)
{
var sum = firstNumber + secondNumber;
var result = "Hej " + name + "!\n" + "Summan är " + sum;
return result;
}
var first = calc("Kalle", 7, 2);
var second = calc("Eva", 27, 81);
var third = calc("Fredrik", 43, 2);
var fourth = calc("Margareta", 882, 90);
document.writeln(first);
document.writeln(second);
document.writeln(third);
document.writeln(fourth);
</script>