Known, 4x+6=14, then 2x+2=how much
已知，4x+6=14，则2x+2=多少
<gadget id="calculator">14 - 6</gadget>
<output>8</output>

<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<result>6</result>