(2.8+3.85/3.5)*4.6=how much.
(2.8+3.85/3.5)*4.6=多少．
<gadget id="calculator">3.85 / 3.5</gadget>
<output>1.1</output>

<gadget id="calculator">2.8 + 1.1</gadget>
<output>3.9</output>

<gadget id="calculator">3.9 * 4.6</gadget>
<output>17.94</output>

<result>17.94</result>