The radius of the base of a cone is 6 cm and the height is 20 cm. What is its volume in cubic meters?
圆锥的底面半径是6厘米，高是20厘米，它的体积是多少立方米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">20 / 1_004_800</gadget>
<output>1/50_240 = around 0.00002</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * (1/50_240)</gadget>
<output>0.00075</output>

<result>0.00075</result>