When 5+x=12, 2x+2*9=how much
当5+x=12时，2x+2*9=多少
<gadget id="calculator">12 - 5</gadget>
<output>7</output>

<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<gadget id="calculator">2 * 9</gadget>
<output>18</output>

<gadget id="calculator">14 + 18</gadget>
<output>32</output>

<result>32</result>