private void sumar(int columna, int fila, int[] datos) {
        int index = 0;
        int total = 0;
        for (int i = 0; i < fila; i++) {
            tableHtml += "<tr>";
            for (int j = 0; j < columna; j++) {
                total += getNumero(datos, index);
                tableHtml += "<td>" + getNumero(datos, index) + "</td>";
                index++;
            }
            tableHtml += "<td>" + total + "</td></tr>\n";
            total = 0;
        }
    }