The length of a rectangle is 3.2 meters and the width is 2.8 meters. Now the length is increased to 4 meters, and the area is increased by 3.04 meters**2 compared to the original. What is the current width in meters?
一个长方形的长是3.2米，宽是2.8米，现在长增加到4米，面积比原来增加3.04米**2，现在的宽是多少米．
<gadget id="calculator">3.2 * 2.8</gadget>
<output>8.96</output>

<gadget id="calculator">8.96 + 3.04</gadget>
<output>12</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>