It is known that the length and width of a rectangle are both prime numbers, and the perimeter is 36 decimeters. What is the maximum area of this rectangle in square decimeters? How many
已知一个长方形的长和宽都是质数，并且周长是36分米，这个长方形的面积最大是多少平方分米．多少
<gadget id="calculator">7 * 11</gadget>
<output>77</output>

<result>77</result>