A piece of paper is 9 cm long and 7 cm wide, cut it into the largest square, what is the area of this square in square centimeters
一张纸长是9厘米，宽是7厘米，用它剪成一个最大的正方形，这个正方形的面积是多少平方厘米
<gadget id="calculator">7 * 7</gadget>
<output>49</output>

<result>49</result>