There is a path with a width of 1 meter around a square pool. If the area of the path is 52 square meters, what is the area of the pool in square meters?
一个正方形水池的四周有一条宽1米的小路，若小路的面积为52平方米，水池的面积是多少平方米．
<gadget id="calculator">52 / 4 / 1</gadget>
<output>13</output>

<gadget id="calculator">13 - 1</gadget>
<output>12</output>

<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<result>144</result>