A fertilizer factory produces the same amount of fertilizer every day except the original pile of fertilizer. The fertilizers in this fertilizer plant are transported by trucks, 16 trucks are used for 32 days, and 24 trucks are used for 16 days. If it takes 8 days to finish the shipment, how many cars are needed to transport it?
某化肥厂除原有的一堆化肥外，每天都生产出相同数量的化肥．这个化肥厂的化肥用汽车来运，用16辆汽车32天恰好运完，用24辆汽车16天恰好运完．如果要8天恰好运完，那么需要多少辆汽车来运？
<gadget id="calculator">16 * 32</gadget>
<output>512</output>

<gadget id="calculator">24 * 16</gadget>
<output>384</output>

<gadget id="calculator">512 - 384</gadget>
<output>128</output>

<gadget id="calculator">32 - 16</gadget>
<output>16</output>

<gadget id="calculator">128 / 16</gadget>
<output>8</output>

<gadget id="calculator">32 * 8</gadget>
<output>256</output>

<gadget id="calculator">512 - 256</gadget>
<output>256</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">256 + 64</gadget>
<output>320</output>

<gadget id="calculator">320 / 8</gadget>
<output>40</output>

<result>40</result>