A rectangular playground is 152 meters long and 40 meters wide. After expansion, the length and width increase by 8 meters respectively. How many square meters does the playground area increase after expansion?
一个长方形操场，长152米，宽40米，扩建后长和宽分别增加8米，扩建后操场面积增加了多少平方米？
<gadget id="calculator">152 + 8</gadget>
<output>160</output>

<gadget id="calculator">40 + 8</gadget>
<output>48</output>

<gadget id="calculator">160 * 48</gadget>
<output>7_680</output>

<gadget id="calculator">152 * 40</gadget>
<output>6_080</output>

<gadget id="calculator">7_680 - 6_080</gadget>
<output>1_600</output>

<result>1_600</result>