How many small squares with an area of 4cm*2 can be cut from a square of cardboard with a side length of 4cm?
一张边长是4cm的正方形硬纸板，可剪成多少个面积是4cm**2的小正方形．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>