Two engineering teams, A and B, jointly complete a task. The A engineering team has 138 people, and the B engineering team has 96 people. Due to work needs, some personnel are transferred from team B to team A. After the transfer, the number of people in team A is twice that of team B. How many people are transferred from team B to team A?
甲乙两个工程队共同完成一项任务，甲工程队有138人，乙工程队有96人．因工作需要，从乙队调出一部分人员到甲队，调动后甲队的人数是乙队的2倍．从乙队调多少人去甲队？
<gadget id="calculator">192 - 138</gadget>
<output>54</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">54 / 3</gadget>
<output>18</output>

<result>18</result>