There are 8 〇, take out its (1/2), how much is it.
有8个〇，拿出它的(1/2)，是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 * (1/2)</gadget>
<output>4</output>

<result>4</result>