A batch of brooms, no matter it is divided into 15 classes, 6 classes or 10 classes, is just finished. How many brooms are there at least in this batch?
一批笤帚，不论是15个班来分，6个班来分还是10个班来分，都正好分完．这批笤帚至少有多少把？
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<result>30</result>