If 2x+8=14, then 4x+1=how much.
如果2x+8=14，那么4x+1=多少．
<gadget id="calculator">14 - 8</gadget>
<output>6</output>

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

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>