There are two transportation teams, A and B. There are 32 people in team A and 28 people in team B. If some people are transferred from team B to team A, then the number of people in team A is exactly twice the number of people in team B. How many people joined Team A?
甲乙两运输队，甲队原有32人，乙队原有28人，若从乙队调走一些人到甲队，那么甲队人数恰好是乙队人数的2倍，问从乙队调走了多少人到甲队？
<gadget id="calculator">28 * 2</gadget>
<output>56</output>

<gadget id="calculator">56 - 32</gadget>
<output>24</output>

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

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<result>8</result>