2X-2=8, then 3X+3=how much.
2X-2=8，那么3X+3=多少．
<gadget id="calculator">2 + 8</gadget>
<output>10</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<result>18</result>