A conical part has a base radius of 5 cm. The height is 3 times the radius of the base, what is the volume of this part in cubic centimeters?
一个圆锥形零件，它的底面半径是5cm．高是底面半径的3倍，这个零件的体积是多少立方厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * 15</gadget>
<output>392.5</output>

<result>392.5</result>