There are two teams, A and B, with 42 people in team A and 14 people in team B. Now two teams, A and B, have the same number of people. When the number of people in team A increases, the number of people in team A is exactly twice the number of people in team B.
有甲、乙两个队伍，甲队42人，乙队14人．现在甲、乙两队增加同样的人数，问当甲队增加到多少人时，甲队的人数正好是乙队人数的2倍．
<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<gadget id="calculator">42 - 28</gadget>
<output>14</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">14 / 1</gadget>
<output>14</output>

<gadget id="calculator">42 + 14</gadget>
<output>56</output>

<result>56</result>