A notebook is 2 yuan, a pen is 6 yuan. Xiao Ming bought 7 notebooks with 50 yuan, how many pens can he buy with the remaining money?
一本笔记本2元，一支钢笔6元．小明拿50元钱买了7本笔记本，剩下的钱能买几支钢笔？
<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<gadget id="calculator">50 - 14</gadget>
<output>36</output>

<gadget id="calculator">36 / 6</gadget>
<output>6</output>

<result>6</result>