The largest factor shared by A and B is 4, and the smallest shared multiple is 60. If A is 12, how much is B?
甲乙两数共有的因数中最大的是4，共有的倍数中最小的是60，如果甲是12，那么乙是多少？
<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<result>20</result>