Students play games, 6 people in each group, just divided into 20 groups. If there are 8 people in each group, how many groups can they be divided into?
同学们做做游戏，每组6人，正好分成20组．如果每组8人，能分几组？
<gadget id="calculator">20 / 8</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">6 * (5/2)</gadget>
<output>15</output>

<result>15</result>