In the experimental elementary school, there are 6 people jumping rope on the playground, which is (2/9) of the total number of people participating in activities on the playground, and the number of people running is (2/3) of the total number of people participating in activities on the playground. How many people are running on the playground?
实验小学在操场跳绳的有6人，是操场上参加活动总人数的(2/9)，跑步的人数又是操场上参加活动总人数的(2/3)，操场上跑步的有多少人？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">6 / (2/9)</gadget>
<output>27</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">27 * (2/3)</gadget>
<output>18</output>

<result>18</result>