There is a poultry house with an inner length of 18 meters and a width of 12 meters. In order to lay a foundation, a trench with a width of 0.5 meters and a depth of 1.6 meters needs to be dug around. How many cubic meters of soil must be excavated?
有一禽舍，内长18米，宽12米，为了打地基，需要在四周挖宽0.5米，深1.6的沟，一共要挖出多少立方米的土？
<gadget id="calculator">18 + 0.5 + 0.5</gadget>
<output>19</output>

<gadget id="calculator">19 * 2</gadget>
<output>38</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">38 + 24</gadget>
<output>62</output>

<gadget id="calculator">62 * 0.5 * 1.6</gadget>
<output>49.6</output>

<result>49.6</result>