There are three piles of coal, large, medium and small, with a weight ratio of 11:4:2. A group of workers moved the large coal pile for half a day, and then sent (1/2) and (1/4) workers to the middle and small piles in the afternoon. Carrying coal, the remaining 2 people are still carrying large piles of coal. At the end of get off work, the small and medium coal piles have just been removed, and the remaining coal in the large pile of coal needs to be moved by a worker for a day. How many workers are in this group if the workers are equally productive?
有大中小三堆煤，其重量比为11：4：2，一组工人先在大煤堆搬运了半天，下午分别派出(1/2)和(1/4)的工人到中，小堆煤搬运，剩下的2人仍在大堆煤搬运．下班时，中小煤堆正好搬完，而大堆煤剩下的煤还需一个工人搬运一天才能搬完．如果工人的工作效率相同，问这组工人有多少人？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/2) - (1/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / (1/4)</gadget>
<output>8</output>

<result>8</result>