Dig a cylindrical pool with a bottom diameter of 20 meters and a depth of 2 meters. How many times can the excavated soil be transported by 5 cars with a length of 5 meters, a width of 2 meters and a height of 1 meter?
挖一个圆柱形水池，底面直径是20米，深是2米．将挖出的土用5辆车厢长5米、宽2米、高1米的汽车来运，多少次才能运完？
<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>