The width of a rectangle is 2.5 decimeters and the length is 2.2 times the width. How many square meters is the area of this rectangle?
一个长方形的宽是2.5分米，长是宽的2.2倍．这个长方形的面积的多少平方米？
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">2.5 * 2.2 * 0.025</gadget>
<output>0.1375</output>

<result>0.1375</result>