How many people participated in the tree planting activity, divided into groups with equal number of people, and the number of groups divided was the remaining number of people (8/21), at least how many people participated in the tree planting activity?
有若干人参加植树活动，分成人数相等的小组，结果分的组数是余下的人数的(8/21)，至少有多少人参加植树活动？
<gadget id="calculator">8 / 21</gadget>
<output>8/21 = around 0.380952</output>

<gadget id="calculator">22 * 21 * (8/21)</gadget>
<output>176</output>

<gadget id="calculator">176 + 21</gadget>
<output>197</output>

<result>197</result>