The greatest common factor of A and B is 3, and the least common multiple is 60. If A is 15, what is B?
A和B的最大公因数是3，最小公倍数是60，如果A是15，那么B是多少．
<gadget id="calculator">3 / 15</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">60 * (1/5)</gadget>
<output>12</output>

<result>12</result>