There are two engineering teams, Team A has 180 people and Team B has 117 people. Due to the needs of the project, the number of team A should be twice that of team B. How many people should be transferred from team B to team A?
有两个工程队，甲队180人，乙队有117人．因工程需要，甲队人数应是乙队的2倍．应从乙队调多少人到甲队？
<gadget id="calculator">180 + 117</gadget>
<output>297</output>

<gadget id="calculator">297 / 3</gadget>
<output>99</output>

<gadget id="calculator">117 - 99</gadget>
<output>18</output>

<result>18</result>