A cylinder has a base diameter of 4 cm and a height of 1.2 m, what is its volume?
一个圆柱的底面直径是4cm高是1.2m，它的体积是多少？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">1.2 * 100</gadget>
<output>120</output>

<gadget id="calculator">3.14 * 4 * 120</gadget>
<output>1_507.2</output>

<result>1_507.2</result>