Php or JavaScript calculator needed ASAP

[Thanks48]

I have taught myself programming in certain languages over the years. Still haven't quite figured out out how to make this calculator work the way I want it. Here is the formula that I want the calculator to perform.
I want it to be in a column type setup like so

Left side:
Carbs: <input box> (should times by two)
Calories: <input box>
Protein: <input box> (should times by three)

Right side of form:
Total: ( Total of all three on left side times 2.66 )

Anyone that can get me a script for this I would greatly appreciate it.

[something else]

<script type="text/javascript">
function somethingElse()
{
var cb = document.getElementById("carbs").value;
var cl = document.getElementById("calories").value;
var p = document.getElementById("protein").value;
document.getElementById("output").value = ((cb*2)+cl+(p*3))*2.66;
}
</script>
<form>
carbs: <input type="text" id="carbs" onkeyup="somethingElse();"/>
calories: <input type="text" id="calories" onkeyup="somethingElse();"/>
protein: <input type="text" id="protein" onkeyup="somethingElse();"/>
Result: <input type="text" id="output"/>
</form> 

[Thanks48]

Thank you so much I learn something new everyday in programming. I'm going to try one more thing with this if I can't figure it out you mind if I ask you.

[something else]

Sorry i messed up the first code i will edit it

Sure