input_subtraction

<script type="text/javascript">
    $( document ).ready(function() {
        $('.devolvidoInput').blur(function(){
            valor = $(this).val();
            valor2 = $('.retiradoDiv').attr('value');
            saldo = valor2-valor;
            if(saldo == 0){
                $(".saldoInput").val(saldo);
            }
            if(saldo){
                $(".saldoInput").val(saldo);
            }
        });
    });
</script>


<table>
    <tr>
        <td>
            <input class="devolvidoInput"/>
        </td>
        <td>
            <div class="retiradoDiv" value="2">2</div>
        </td>
        <td>
            <input class="saldoInput"/>
        </td>
    </tr>

    <tr>
        <td>
            <input class="devolvidoInput"/>
        </td>
        <td>
            <div class="retiradoDiv" value="2">2</div>
        </td>
        <td>
            <input class="saldoInput"/>
        </td>
    </tr>

    <tr>
        <td>
            <input class="devolvidoInput"/>
        </td>
        <td>
            <div class="retiradoDiv" value="2">2</div>
        </td>
        <td>
            <input class="saldoInput"/>
        </td>
    </tr>
</table>