Teacher Wang cut a piece of colored paper with a length of 15 decimeters and a width of 9 decimeters into small squares with a side length of 3 decimeters. How many pieces can it be cut into?
王老师把一张长15分米，宽9分米的彩纸剪成边长是3分米的小正方形，可以剪成多少个？
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>