Dig a cuboid reservoir, the pool is 18 meters long, 10 meters more than the width, and the depth is 2 meters less than the width. There are currently 24 workers participating in the pond digging work. If each person digs an average of 3 cubic meters per day, how many days will it take to finish digging?
挖一个长方体蓄水池，水池长18米，比宽多10米，深度比宽少2米．现有24个工人参加挖池工作，如果平均每人每天挖3立方米，多少天才能挖完？
<gadget id="calculator">18 - 10</gadget>
<output>8</output>

<gadget id="calculator">18 + 2</gadget>
<output>20</output>

<gadget id="calculator">24 * 3</gadget>
<output>72</output>

<gadget id="calculator">20 / 72</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">18 * 8 * (5/18)</gadget>
<output>40</output>

<result>40</result>