Make a cylindrical oil drum with iron sheet, the radius of the bottom surface is 4 decimeters, the ratio of the height to the radius of the bottom surface is 3:2, how many liters is the volume of this oil drum?
用铁皮做一个圆柱油桶，底面半径4分米，高与底面半径的比是3：2，这个油桶的容积是多少升？
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

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

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

<gadget id="calculator">3.14 * 16 * 6</gadget>
<output>301.44</output>

<result>301.44</result>