When the principal was on duty during the summer vacation, he found a large area of water leaking on the roof of the third floor of the school. He planned to buy a plastic film to cover it up. After measurement, the roof of the leaking part was a rectangle with a length of 11.4 meters and a width of 7.8 meters. At least how many square meters of plastic film do you need to buy?
校长在暑假值班时发现学校三楼楼顶有大面积漏水，打算买塑料膜遮住，经测量漏水部分楼顶是一个长11.4米、宽7.8米的长方形．至少需要买多少平方米的塑料膜？
<gadget id="calculator">11.4 * 7.8</gadget>
<output>88.92</output>

<result>88.92</result>