The third-grade students form a chorus with a total of 135 people. When rehearsing the program, there are 9 people in a row. How many rows can they be in?
三年级学生组成合唱队，共135人，排练节目时，9人一排，可以排成几排？
<gadget id="calculator">135 / 9</gadget>
<output>15</output>

<result>15</result>