group of people are mowing two lawns, the larger one being exactly twice as large as the smaller one. First they all worked on a large piece of grass for half a day, leaving half of them to continue working on the big grass in the afternoon, and just finished mowing the grass when they finished work; It can be finished with 1 person in 1 day. Question: How many people are there in this group of workers?
一群人在两片草地上割草，大的一片草地比小的正好大1倍．他们先全体在大的一片草地干了半天，下午留下一半人在大草地上继续干，收工时正好把草割完；另一半人到小草地上干，收工时还余下一块，这块再用1人经1天也可割完．问：这群干活的人共有多少位？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) - 1</gadget>
<output>1/2 = around 0.5</output>

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

<result>8</result>