Make a cylindrical oil drum with iron sheets, the height is 6 decimeters, and the radius of the bottom surface is high (1/3). What is the volume of this oil drum?
用铁皮作一个圆柱形油桶，高6分米，底面半径是高的(1/3)，这个油桶的体积是多少立方分米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * (1/3)</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<result>75.36</result>