The length of a rectangular playground is 100 meters, which is 2 meters less than three times the width. After the expansion, the length and width will increase by 15 meters respectively. What is the area of the playground after expansion?
长方形的操场长是100米，比宽的3倍少2米．扩建后长和宽各增加15米．扩建后操场的面积是多少平方米？
<gadget id="calculator">100 + 15</gadget>
<output>115</output>

<gadget id="calculator">100 + 2</gadget>
<output>102</output>

<gadget id="calculator">102 / 3</gadget>
<output>34</output>

<gadget id="calculator">34 + 15</gadget>
<output>49</output>

<gadget id="calculator">115 * 49</gadget>
<output>5_635</output>

<result>5_635</result>