A piece of square paper is placed in squares with an area of 1 square centimeter. There are 5 squares in each row, exactly 5 rows. What is the area of this paper in square centimeters?
一张正方形纸，用面积1平方厘米的正方形去摆，每排摆5个，正好摆了5排，这张纸的面积是多少平方厘米．
<gadget id="calculator">5 * 5 * 1</gadget>
<output>25</output>

<result>25</result>