cube box with an internal edge length of 1 meter, and how many cylindrical cartons can be filled inside with a bottom diameter of 2 decimeters and a height of 5 decimeters.
一个正方体箱子的内部棱长是1米，里面装底面直径2分米，高5分米的圆柱纸盒，能装多少个．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">1 * 5</gadget>
<output>5</output>

<gadget id="calculator">10 / 5</gadget>
<output>2</output>

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

<gadget id="calculator">5 * 5 * 2</gadget>
<output>50</output>

<result>50</result>