Dad saw a rectangular board with a length of 6 cm and a width of 4 cm and sawed it into a square board with the largest area. What is the area of the remaining part in square centimeters?
爸爸把一块长6厘米，宽4厘米的长方形木板，锯成一个面积最大的正方形木板，剩余部分的面积是多少平方厘米？
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">24 - 16</gadget>
<output>8</output>

<result>8</result>