If 3x+2=17, then 6x+1=how much.
如果3x+2=17，那么6x+1=多少．
<gadget id="calculator">17 - 2</gadget>
<output>15</output>

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

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<result>31</result>