If a conical container with a height of 15 decimeters is filled with water and poured into a cylindrical container with the same bottom as it, what is the height of the water surface in centimeters?
一个高是15分米的圆锥体容器，盛满水后倒入和它等底的圆柱形容器里，水面的高度是多少厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<result>50</result>