If 3x-2=4, then 5x+1=how much
如果3x-2=4，那么5x+1=多少
<gadget id="calculator">2 + 4</gadget>
<output>6</output>

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>