Fill a conical container with a height of 90 cm with water and pour it into a cylindrical container with the same bottom and height, what is the height of the water in cm
用一个高90厘米的圆锥形容器盛满水，倒入与它等底等高的圆柱形容器中，水的高度为多少厘米
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">90 * (1/3)</gadget>
<output>30</output>

<result>30</result>