Tabela de Parcelas

Se a qtd das parcelas forem de 2 digitos desalinha tudo, e se a qunatidade de digitos dos valores das parcelas forem diferentes tb desalinha.

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Como eu faço para deixar alinhado, direitinho . ?

#Parcelas
{

 clear: both;
 background-color: #F7F7F7;
 padding-left: 9px;
}

#Parcelas li
{

 display: inline;
 clear: both;
 width: 190px;
}

#Parcelas .Qtd
{

 font-size: 11px;
 font-family: Arial;
 text-align: left;
}

#Parcelas .Valor
{

 font-size: 12px;
 font-family: verdana;
 font-weight: bold;
}

 <div id="Parcelas">

 <ul>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl0_ctl00_lblParcela" class="Qtd">1x sem juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl0_ctl00_lblValor" class="Valor">     <b>R$ 4.500,00</b></span></span>
 </li>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl0_ctl01_lblParcela" class="Qtd">2x sem juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl0_ctl01_lblValor" class="Valor">     <b>R$ 2.250,00</b></span></span>
 </li>

 </ul>

 <ul>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl1_ctl00_lblParcela" class="Qtd">3x sem juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl1_ctl00_lblValor" class="Valor">     <b>R$ 1.500,00</b></span></span>
 </li>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl1_ctl01_lblParcela" class="Qtd">4x sem juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl1_ctl01_lblValor" class="Valor">     <b>R$ 1.125,00</b></span></span>
 </li>

 </ul>

 <ul>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl2_ctl00_lblParcela" class="Qtd">5x sem juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl2_ctl00_lblValor" class="Valor">     <b>R$ 900,00</b></span></span>
 </li>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl2_ctl01_lblParcela" class="Qtd">6x sem juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl2_ctl01_lblValor" class="Valor">     <b>R$ 750,00</b></span></span>
 </li>

 </ul>

 <ul>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl3_ctl00_lblParcela" class="Qtd">7x com juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl3_ctl00_lblValor" class="Valor">     <b>R$ 790,63</b></span></span>
 </li>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl3_ctl01_lblParcela" class="Qtd">8x com juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl3_ctl01_lblValor" class="Valor">     <b>R$ 712,56</b></span></span>
 </li>

 </ul>

 <ul>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl4_ctl00_lblParcela" class="Qtd">9x com juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl4_ctl00_lblValor" class="Valor">     <b>R$ 652,39</b></span></span>
 </li>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl4_ctl01_lblParcela" class="Qtd">10x com juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl4_ctl01_lblValor" class="Valor">     <b>R$ 604,76</b></span></span>
 </li>

 </ul>

 <ul>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl5_ctl00_lblParcela" class="Qtd">11x com juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl5_ctl00_lblValor" class="Valor">     <b>R$ 566,28</b></span></span>
 </li>

 <li>
 <span id="spanParcela"><span id="ltvParcela_ctrl5_ctl01_lblParcela" class="Qtd">12x com juros</span></asp:Label></span>
 <span id="spanValor"><span id="ltvParcela_ctrl5_ctl01_lblValor" class="Valor">     <b>R$ 534,66</b></span></span>
 </li>

 </ul>

 </div>