If the thickness of a piece of paper is 0.1 mm, fold it in half consecutively 3 times, what is the thickness in mm?
如果一张纸的厚度是0.1毫米，将它连续对折3次，厚度是多少毫米．
<gadget id="calculator">2 ** 3</gadget>
<output>8</output>

<gadget id="calculator">0.1 * 8</gadget>
<output>0.8</output>

<result>0.8</result>