Divide a batch of books in 3:4:5 or according to the two schemes of 2:4:5 to Classes A, B, and C. This batch of books can be divided exactly. How many books may there be in this batch?
把一批书3：4：5或按2：4：5两种方案分给甲、乙、丙三个班，都可以将这批书正好分完，这批书可能有多少本．
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>

<gadget id="calculator">2 + 4 + 5</gadget>
<output>11</output>

<gadget id="calculator">12 * 11</gadget>
<output>132</output>

<result>132</result>