The teacher asked the students to stand in a row of 10 people, but the students made a mistake and stood in a row of 11 people. As a result, they stood in a row of 18 people and there were 2 more people. If you follow the teacher's order, how many rows should it be?
老师让同学们按10人一排站队，可同学们错站成了11人一排，结果站了18排还多出2人．如果按老师的命令，应是几排？
<gadget id="calculator">11 * 18</gadget>
<output>198</output>

<gadget id="calculator">198 + 2</gadget>
<output>200</output>

<gadget id="calculator">200 / 10</gadget>
<output>20</output>

<result>20</result>