A rectangular playground, the original length is 60 meters, 40 meters wide. Now it is going to be expanded, the length has been increased by 25 meters, and the width has been increased by 30 meters. How many square meters will the playground area after the expansion be?
一块长方形操场，原来的长是60米，宽是40米．现在要把它进行扩建，长增加了25米，宽增加了30米，扩建以后的操场的面积有多少平方米？
<gadget id="calculator">60 + 25</gadget>
<output>85</output>

<gadget id="calculator">40 + 30</gadget>
<output>70</output>

<gadget id="calculator">85 * 70</gadget>
<output>5_950</output>

<result>5_950</result>