A conical valley mound has a base circumference of 6.28 meters and a height of 0.9 meters. How high can it be stacked if it is packed in a cylindrical grain storehouse with a base radius of 1 meter?
一圆锥形谷堆底面周长是6.28米，高0.9米．若把它装在一个底面半径为1米的圆柱形粮囤里，可以堆多高？
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 * 1 * 0.9 * (1/3)</gadget>
<output>0.942</output>

<gadget id="calculator">3.14 * 1 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">0.942 / 3.14</gadget>
<output>0.3</output>

<result>0.3</result>