The base of a cuboid is a square, the area of the base is 25 square decimeters, and the height is 5 times the side length of the base. What is the surface area of this cuboid?
一个长方体的底面是一个正方形，底面积是25平方分米，高是底面边长的5倍，这个长方体的表面积是多少平方分米？
<gadget id="calculator">5 * 5 * 2</gadget>
<output>50</output>

<gadget id="calculator">5 * 4 * 5 * 5</gadget>
<output>500</output>

<gadget id="calculator">50 + 500</gadget>
<output>550</output>

<result>550</result>