2x+2=8, then 3x+3=how much.
2x+2=8，那么3x+3=多少．
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

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

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">9 + 3</gadget>
<output>12</output>

<result>12</result>