A cuboid fuel tank. The bottom is a square, and the ratio of the area of the front to the bottom is 4:1. The surface area is 360 square decimeters. What is the area of the base in square feet.
一个长方体油箱．底面是一个正方形，前面与底面的面积比是4：1．表面积为360平方分米．底面的面积是多少平方分米．
<gadget id="calculator">1 * 1 * 2</gadget>
<output>2</output>

<gadget id="calculator">1 + 1 + 1 + 1</gadget>
<output>4</output>

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

<gadget id="calculator">2 + 16</gadget>
<output>18</output>

<gadget id="calculator">360 / 18</gadget>
<output>20</output>

<result>20</result>