A road is assigned to two road repair teams A and B at a ratio of 3:2. It is known that team A needs to repair 21 kilometers, how many kilometers should team B repair?
把一条公路按照3：2的比例分配给甲、乙两个修路队，已知甲队要修21千米，乙队应修多少千米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">21 * (2/3)</gadget>
<output>14</output>

<result>14</result>