How many hours will it take to dig a large pond with a length of 120 meters, a width of 32 meters and a depth of 4 meters with a 60 cubic meter excavator per hour.
挖一个长120米、宽32米、深4米的大水塘，用每小时挖土60立方米挖土机来挖，需多少小时可挖完．
<gadget id="calculator">4 / 60</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">120 * 32 * (1/15)</gadget>
<output>256</output>

<result>256</result>