Given that 3x-6=6, then 4x+7=how much.
已知3x-6=6，则4x+7=多少．
<gadget id="calculator">6 + 6</gadget>
<output>12</output>

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

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">16 + 7</gadget>
<output>23</output>

<result>23</result>