Students in two classes of grade six hold hands in three circles to play games. There are 25 people in the innermost circle. The number of people in each outer circle is one-fifth more than that in the inner circle. How many people are playing games?
六年级两个班的学生手拉手围成三圈做游戏，最里圈25人，外面每圈的人数都依次比里圈多(1/5)，共有多少人在做游戏？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">25 * (6/5)</gadget>
<output>30</output>

<gadget id="calculator">25 * (6/5) * (6/5)</gadget>
<output>36</output>

<gadget id="calculator">25 + 30 + 36</gadget>
<output>91</output>

<result>91</result>