There is a conical container with a base diameter of 4 cm and a height of 12 cm. Fill this container with water and pour it into a cylindrical container with a bottom radius of 2 cm. What is the depth of water in the cylindrical container?
有一个圆锥形容器，底面直径是4厘米，高是12厘米．把这个容器装满水，然后倒入底面半径是2厘米的圆柱形容器，圆柱形容器中水的深度是多少厘米？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

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

<gadget id="calculator">3.14 * 4 * 12 * (1/3)</gadget>
<output>50.24</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">50.24 / 12.56</gadget>
<output>4</output>

<result>4</result>