For a rectangular steel plate, a rectangle with a width of 8 decimeters is cut off from the long side, and a rectangle with a width of 3 decimeters is cut off from the width. ．
一块长方形钢板，长边截去一个宽8分米的长方形，宽也截去一个宽3分米的长方形，剩下的正好是正方形，面积比原来减少了310平方分米，求这个正方形的面积．
<gadget id="calculator">26 * 26</gadget>
<output>676</output>

<result>676</result>