The area of a rectangular lawn is 420 square meters, and the length is 30 meters. If the length remains the same and the width is increased by 11 meters, what is the current area of the rectangular lawn in square meters?
一块长方形草地的面积是420平方米，长是30米，如果长不变，宽增加11米后，这块长方形草地现在的面积是多少平方米？
<gadget id="calculator">30 * 11</gadget>
<output>330</output>

<gadget id="calculator">330 + 420</gadget>
<output>750</output>

<result>750</result>