A conical glass toy has a bottom diameter of 6 cm and a height of 20 cm. Now use cardboard to make a packaging box for it for transportation. The length and width of the packaging box are both 6 cm and the height is 20 cm. After loading the toy, wood chips need to be put in the remaining space to ensure safety. What is the volume of the wood chips?
一种圆锥形的玻璃玩具，底面直径是6厘米，高是20厘米，现用纸板为它配套制作一个包装盒以便运输，包装盒的长和宽都是6厘米，高是20厘米．装入玩具后，为保证安全需要在剩余空间内装入木屑，请问木屑的体积是多少？
<gadget id="calculator">6 * 6 * 20</gadget>
<output>720</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

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

<gadget id="calculator">(1/3) * 3.14 * 9 * 20</gadget>
<output>188.4</output>

<gadget id="calculator">720 - 188.4</gadget>
<output>531.6</output>

<result>531.6</result>