The experimental primary dance team has 138 students, and the chorus team has 96 students. Due to the needs of programming, the number of dance teams is required to be twice the number of chorus teams. How many people should be transferred from the chorus team to the dance team?
实验一小舞蹈队有学生138人，合唱队有学生96人，因编排节目需要，要求舞蹈队的人数是合唱队人数的2倍，应从合唱队凋多少人到舞蹈队？
<gadget id="calculator">138 + 96</gadget>
<output>234</output>

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

<gadget id="calculator">234 / 3</gadget>
<output>78</output>

<gadget id="calculator">96 - 78</gadget>
<output>18</output>

<result>18</result>