To cut out the largest square from a rectangle with a length of 10 cm and a width of 6 cm, what shape is left? What is its area in square centimeters?
要从一个长是10厘米，宽是6厘米的长方形中剪下一个最大的正方形，剩下部分是什么图形？它的面积是多少平方厘米？
<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>