Overseas Chinese Primary School holds a broadcasting exercise competition. There are 189 students in the third grade. They are going to stand in a row with 9 people. How many rows should they stand in total?
华侨小学举行广播操比赛，三年级共有189人，准备9人站一行，一共要站多少行？
<gadget id="calculator">189 / 9</gadget>
<output>21</output>

<result>21</result>