The first engineering team has 78 people, and the second engineering team has 82 people. Due to work needs, if the number of the first engineering team is three times that of the second engineering team, how many people must be transferred from the second engineering team to the first engineering team? Engineering Team?
第一工程队有78人，第二工程队有82人，由于工作需要，要使第一工程队的人数是第二工程队的3倍，那么必须从第二工程队调多少人到第一工程队？
<gadget id="calculator">3 * 82</gadget>
<output>246</output>

<gadget id="calculator">246 - 78</gadget>
<output>168</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">168 / 4</gadget>
<output>42</output>

<result>42</result>