and B are two squares, the ratio of the side lengths is 4:5. It is known that the area of A is 180 square centimeters less than that of B. What is the sum of the areas of the two squares A and B?
甲、乙两个正方形，边长的比4：5，已知甲的面积比乙的面积少180平方厘米，那么甲、乙两个正方形的面积和是多少平方厘米．
<gadget id="calculator">25 - 16</gadget>
<output>9</output>

<gadget id="calculator">180 / 9</gadget>
<output>20</output>

<gadget id="calculator">20 * 16</gadget>
<output>320</output>

<gadget id="calculator">20 * 25</gadget>
<output>500</output>

<gadget id="calculator">320 + 500</gadget>
<output>820</output>

<result>820</result>