If a circle is folded in half three times, what are the three parts?
把一个圆形对折三次后，其中的3份是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2) * (1/2) * 3</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>