Qiangqiang and Lili share 40 toffees, and Qiangqiang has 6 less than Lili. How many toffees does Qiangqiang have? (column equation)
强强和丽丽共有奶糖40粒，强强比丽丽少6粒．强强有奶糖多少粒？(列方程)
<gadget id="calculator">40 - 6</gadget>
<output>34</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">34 / 2</gadget>
<output>17</output>

<result>17</result>