A parking lot is 40 meters wide, and its length is 50 meters longer than its width. How many square meters does this parking lot occupy?
某停车场宽40米，长比宽多50米，这个停车场占地多少平方米？
<gadget id="calculator">40 + 50</gadget>
<output>90</output>

<gadget id="calculator">90 * 40</gadget>
<output>3_600</output>

<result>3_600</result>