If the perimeter of a rectangle is 32 meters, if its length and width are increased by 3 meters, how many square meters will its area increase?
一个长方形的周长为32米，如果它的长和宽各增加3米，面积增加多少平方米？
<gadget id="calculator">32 / 2</gadget>
<output>16</output>

<gadget id="calculator">3 * 16</gadget>
<output>48</output>

<gadget id="calculator">48 + 9</gadget>
<output>57</output>

<result>57</result>