A bicycle cross-country race is 220 kilometers long and divided into 20 road sections, some of which are 14 kilometers long and the rest are 9 kilometers long. How many road sections are 9 kilometers long?
自行车越野赛全程220千米，被分为20个路段，其中一部分路段长14千米，其余路段长9千米，则长为9千米的路段有多少个．
<gadget id="calculator">9 * 20</gadget>
<output>180</output>

<gadget id="calculator">220 - 180</gadget>
<output>40</output>

<gadget id="calculator">14 - 9</gadget>
<output>5</output>

<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">20 - 8</gadget>
<output>12</output>

<result>12</result>