Students practice in a queue. If you stand in 8 rows, 15 people stand in each row. If there are less than 5 people in each row, how many rows can you stand in?
同学们进行队列练习，如果站8行，每行站15人，如果每行少站5人，可以站成几行？
<gadget id="calculator">15 - 5</gadget>
<output>10</output>

<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">15 * (4/5)</gadget>
<output>12</output>

<result>12</result>