Split monetary value by checked box

Question

I have doubts about how to make it work, check several "checkbox" or just one, enter a value in the "Total" input and show the split result, without refresh on the page, I tried with . on change, but I can’t get the checkded quantity and value and show the split value.

Example.

$('input[type=checkbox]').on('change', function() {
  var total = $('input[type=checkbox]:checked').length;
  $('.resultado').html(total);
});


$('input').on('change', function() {
  $('.resultado2').html(this.value);
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input type="checkbox" name="usuario[]" value="1">
<input type="checkbox" name="usuario[]" value="1">
<input type="checkbox" name="usuario[]" value="1">
<input type="checkbox" name="usuario[]" value="1">
<input type="text" value="0">
<div class="resultado2"></div>
<div class="resultado"></div>

Answer 1

Following a simplification in the code:

function calcula() {
  var total = $('#total').val();
  var qtd = $('input[type=checkbox]:checked').length;
  $('#resultado').html( total / qtd );
}
$('input[type=checkbox]').on('change', calcula );
$('#total').on('input', calcula );

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input type="checkbox" name="usuario[]" value="1" checked>
<input type="checkbox" name="usuario[]" value="2" checked>
<input type="checkbox" name="usuario[]" value="3" checked>
<input type="checkbox" name="usuario[]" value="4" checked>
<input type="text" id="total" value="0">
<div id="resultado"></div>