A conical pile of wheat has a circumference of 15.7 meters at the bottom and a height of 3 meters. How high can this pile of wheat be packed into a cylindrical grain storehouse with a diameter of 4 meters at the bottom?
一个圆锥形小麦堆，底面周长是15.7米，高是3米，把这堆小麦装进底面直径是4米的圆柱形粮囤里，可以装多高？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15.7 / 3.14 / 2</gadget>
<output>2.5</output>

<gadget id="calculator">2.5 ** 2</gadget>
<output>6.25</output>

<gadget id="calculator">(1/3) * 3.14 * 6.25 * 3</gadget>
<output>19.625</output>

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

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

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

<gadget id="calculator">19.625 / 12.56</gadget>
<output>1.5625</output>

<result>1.5625</result>