The third grade is doing radio exercises, arranged in 3 rows, with 15 people in each row, if they are arranged in 9 rows, how many people are there in each row?
三年级做广播操，排成3行，每行15人，如果排成9行，每行有多少人？
<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<result>5</result>