A piece of rectangular iron sheet is 18.84 decimeters long and 12 decimeters wide. Roll it into a cylinder and add a bottom to make an iron drum. What is the maximum volume of this iron drum?
一块长方形铁皮，长18.84分米，宽12分米，把它卷成一个圆筒，再添上一个底成为铁桶，这个铁桶的容积最大是多少？
<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 * 12</gadget>
<output>339.12</output>

<result>339.12</result>