Class 3 is divided into study groups. If each group has 4 people, it can be divided into 15 groups. If each group has 6 people, how many groups can it be divided into?
三1班分学习小组，如果每组4人，可以分15组，如果每组分6人，可以分几组？
<gadget id="calculator">4 / 6</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>