total of 38 rabbits are kept in three cages. If 7 more rabbits are put into cage A, 5 rabbits are taken out from cage B, and half are taken out from cage C, then the number of rabbits in the three cages is equal. It turns out that the number of rabbits in cage B is how many times the number of rabbits in cage A?
三个兔笼共关着38只兔子．如果往甲笼里再放入7只兔子，从乙笼里拿出5只，丙笼里取出一半，这时三个兔笼内兔子的只数相等．原来乙笼的兔子只数是甲笼只数的几倍？
<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<gadget id="calculator">38 - 7 - 5 - 14</gadget>
<output>12</output>

<gadget id="calculator">1 + 1 + 2</gadget>
<output>4</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 + 7 + 5</gadget>
<output>15</output>

<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<result>5</result>