[jQuery] Update element when changes

[jQuery] Update element when changes


Hi every:
I have two input fields and I want the second updated every time I
change a value in the first. I wrote this function but it doesn't work
until the first element lost focus (for example I clic anywhere or press
TAB button)
$('#order').change(function(){
$('#total_buyed').val($(this).val() * 2.75);
});
What I'm doing wrong
--
Saludos
ReynierPM