Teacher Wu made a rectangular teaching tool with A centimeter long iron wire (there is no iron wire left). If the length of this teaching tool is 25 cm, what is the width in cm?
吴老师用A厘米长的铁丝做了一个长方形的教学工具(铁丝没有剩余)，若这个教学工具的长是25厘米，则宽是多少厘米．
<gadget id="calculator">2 - 25</gadget>
<output>-23</output>

<result>-23</result>