0.5*(12/25)=how much.
0.5*(12/25)=多少．
<gadget id="calculator">12 / 25</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">0.5 * (12/25)</gadget>
<output>0.24</output>

<result>0.24</result>