If a conical container with a height of 2 cm is filled with water and poured into a cylindrical container with the same height as the bottom, what is the height of the water surface?
把一个高是2cm的圆锥形容器装满水，倒入与这等底等高的圆柱形容器中，水面的高度是多少．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>