Use a rectangular bamboo mat with a length of 18.84 meters and a width of 1.5 meters to form a cylindrical grain storehouse with the largest area. What is the volume of this grain storehouse in cubic meters?
用一张长18.84米，宽1.5米的长方形竹席，围成一个占地面积最大的圆柱形粮囤，这个粮囤的容积是多少立方米？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 1.5</gadget>
<output>42.39</output>

<result>42.39</result>