If a piece of glass with a length of 15 decimeters and a width of 12 decimeters is cut into a square with the same size and as large an area as possible, the glass will not be wasted, at least how many pieces can it be cut into?
一块长15分米、宽12分米的玻璃如果切割成大小一样，面积尽可能大的正方形，玻璃没有浪费，至少可以切割成多少块？
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

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

<result>20</result>