If the length and width of a rectangle are increased by 20%, how much will the area of the rectangle increase from the original?
一个长方形的长和宽各增加20%，这个长方形的面积比原来增加多少
<gadget id="calculator">1.2 * 1.2</gadget>
<output>1.44</output>

<gadget id="calculator">1.44 - 1</gadget>
<output>0.44</output>

<result>0.44</result>