The worker Master Zhang made 54 parts in 6 minutes, and Master Li made 2 more parts per minute than Master Zhang. How many parts does Master Li make per minute?
工人张师傅6分钟做了54个零件，李师傅每分钟比张师傅多做2个零件．李师傅每分钟做几个零件？
<gadget id="calculator">54 / 6</gadget>
<output>9</output>

<gadget id="calculator">9 + 2</gadget>
<output>11</output>

<result>11</result>