The park square needs to expand a rectangular green space with an area of 600 square meters and a width of 7 meters. The length remains the same and the width is increased to 35 meters. What is the area of the green space after the expansion?
公园广场要扩大一块面积是600平方米，宽7米的长方形绿地，长不变，宽要增加到35米，扩建后绿地面积是多少？
<gadget id="calculator">90 * 35</gadget>
<output>3_150</output>

<result>3_150</result>