In order to purify the air, Dongwa Primary School continues to expand the green area. In 2009, the lawn on the campus was a rectangle with a length of 26 meters and a width of 18 meters. In 2010, the lawn was expanded to 1.2 times its original length and 25 meters in width. How many square meters is the expanded lawn area?
为了净化空气，东哇小学不断扩大绿化面积．2009年校园内的草坪是长26米，宽18米的长方形，2010年草坪的长扩大到原来的1.2倍，宽增加到25米．扩大后的草坪面积是多少平方米？
<gadget id="calculator">26 * 1.2</gadget>
<output>31.2</output>

<gadget id="calculator">31.2 * 25</gadget>
<output>780</output>

<result>780</result>