The inner diameter of the water pipe is 2 cm and the velocity of water in the pipe is 6 cm per second. A classmate went to the sink to wash his hands and forgot to turn off the tap when he left. How many liters of water was wasted in 5 minutes?
自来水管的内直径是2厘米，水管内水的流速是每秒6厘米．一位同学去水池洗手，走时忘了关水龙头，5分钟浪费多少升水．
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">6 * 5 * 60</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 / 1_000</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">3.14 * 1 * (9/5)</gadget>
<output>5.652</output>

<result>5.652</result>