(2/3)=6/9=how much: 81.
(2/3)=6/9=多少：81．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">81 * (2/3)</gadget>
<output>54</output>

<result>54</result>