6/2*(1+2)=how much.
6/2*(1+2)=多少．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>